diff --git a/NodeList.xlsx b/NodeList.xlsx
index 9dbb0cbf..d678af17 100644
Binary files a/NodeList.xlsx and b/NodeList.xlsx differ
diff --git a/nodes/2.x/Element.ResetSlabShape.dyf b/nodes/2.x/Element.ResetSlabShape.dyf
new file mode 100644
index 00000000..b82e06a5
--- /dev/null
+++ b/nodes/2.x/Element.ResetSlabShape.dyf
@@ -0,0 +1,300 @@
+{
+  "Uuid": "1897bf8b-8893-4f0e-8548-2f7adad9609c",
+  "IsCustomNode": true,
+  "Category": "Clockwork.Revit.Elements.Actions",
+  "Description": "Resets the slabshape of a roof, floor slab or toposolid",
+  "Name": "Element.ResetSlabShape",
+  "ElementResolver": {
+    "ResolutionMap": {}
+  },
+  "Inputs": [],
+  "Outputs": [],
+  "Nodes": [
+    {
+      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "6f21d07906584fbb8ad00e5e3cea879d",
+      "NodeType": "FunctionNode",
+      "Inputs": [
+        {
+          "Id": "d79124100d5543099fd2e8764bc3ec7b",
+          "Name": "list",
+          "Description": "Liste, deren letztes Element abgerufen werden soll\n\nvar[]..[]",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Outputs": [
+        {
+          "Id": "2331f203eba34629bb56910dc0eb9b37",
+          "Name": "item",
+          "Description": "Das letzte Element in der Liste",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "FunctionSignature": "DSCore.List.LastItem@var[]..[]",
+      "Replication": "Auto",
+      "Description": "Ruft das letzte Element in einer Liste ab.\n\nList.LastItem (list: var[]..[]): var[]..[]"
+    },
+    {
+      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "b80fb701295a42a0b3da4ee20af77cee",
+      "NodeType": "FunctionNode",
+      "Inputs": [
+        {
+          "Id": "40df5631adcd4c61a7ee4ddc8c09cc4b",
+          "Name": "list",
+          "Description": "Liste, deren erstes Element abgerufen werden soll\n\nvar[]..[]",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Outputs": [
+        {
+          "Id": "c64b2fe213e94b34986186e42fc50323",
+          "Name": "item",
+          "Description": "Das erste Element in der Liste",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "FunctionSignature": "DSCore.List.FirstItem@var[]..[]",
+      "Replication": "Auto",
+      "Description": "Gibt das erste Element in einer Liste zurück.\n\nList.FirstItem (list: var[]..[]): var[]..[]"
+    },
+    {
+      "ConcreteType": "PythonNodeModels.PythonNode, PythonNodeModels",
+      "Code": "import clr\r\nclr.AddReference('RevitAPI')\r\nfrom Autodesk.Revit.DB import *\r\n\r\nclr.AddReference(\"RevitNodes\")\r\nimport Revit\r\nclr.ImportExtensions(Revit.GeometryConversion)\r\n\r\nclr.AddReference(\"RevitServices\")\r\nimport RevitServices\r\nfrom RevitServices.Persistence import DocumentManager\r\nfrom RevitServices.Transactions import TransactionManager\r\n\r\ndoc = DocumentManager.Instance.CurrentDBDocument\r\nslabs = UnwrapElement(IN[0])\r\nsuccess = []\r\n\r\ndef SlabShapeReset(slab):\r\n\tif hasattr(slab, \"SlapShapeEditor\"):\r\n\t\ttry:\r\n\t\t\tslab.SlabShapeEditor.ResetSlabShape()\r\n\t\t\treturn slab, True\r\n\t\texcept: return slab, False\r\n\tif hasattr(slab, \"GetSlapShapeEditor\"):\r\n\t\ttry:\r\n\t\t\tslab.GetSlabShapeEditor().ResetSlabShape()\r\n\t\t\treturn slab, True\r\n\t\texcept: return slab, False\r\n\telse: return slab, False\r\n\r\nTransactionManager.Instance.EnsureInTransaction(doc)\r\nif isinstance(IN[0], list): \r\n\tresults = [SlabShapeReset(x) for x in slabs]\r\n\tOUT = list(zip(*results))\r\nelse: OUT = SlabShapeReset(slabs)\r\nTransactionManager.Instance.TransactionTaskDone()",
+      "Engine": "IronPython2",
+      "EngineName": "IronPython2",
+      "VariableInputPorts": true,
+      "Id": "3f6b22e9c8c54dd9a237675ede814374",
+      "NodeType": "PythonScriptNode",
+      "Inputs": [
+        {
+          "Id": "7f7b28a903614b848aeb7939016e0a3b",
+          "Name": "IN[0]",
+          "Description": "Input #0",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Outputs": [
+        {
+          "Id": "8508bbf887c640b78e11210051bd658b",
+          "Name": "OUT",
+          "Description": "Result of the python script",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Replication": "Disabled",
+      "Description": "Führt ein eingebettetes Python-Skript aus."
+    },
+    {
+      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Symbol, DynamoCore",
+      "Parameter": {
+        "Name": "element",
+        "TypeName": "var",
+        "TypeRank": -1,
+        "DefaultValue": null,
+        "Description": ""
+      },
+      "Id": "70f60e859fc74566901fba24a86313c9",
+      "NodeType": "InputNode",
+      "Inputs": [],
+      "Outputs": [
+        {
+          "Id": "88cea336fa9e4549abb11602524c8521",
+          "Name": "",
+          "Description": "Symbol",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Replication": "Disabled",
+      "Description": "Ein Funktionsparameter zur Verwendung mit benutzerdefinierten Blöcken.\r\n\r\nSie können den Typ und den Vorgabewert für den Parameter angeben, z. B.\r\n\r\ninput : var[]..[]\r\nvalue : bool = false"
+    },
+    {
+      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Output, DynamoCore",
+      "ElementResolver": null,
+      "Symbol": "element",
+      "Id": "3e764157e5724b5a8cc7a08497954383",
+      "NodeType": "OutputNode",
+      "Inputs": [
+        {
+          "Id": "fce0d3fbeaa04a7080c0e4e6dccb3bc1",
+          "Name": "",
+          "Description": "",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Outputs": [],
+      "Replication": "Disabled",
+      "Description": "Eine Funktionsausgabe zur Verwendung mit benutzerdefinierten Blöcken"
+    },
+    {
+      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Output, DynamoCore",
+      "ElementResolver": null,
+      "Symbol": "success",
+      "Id": "177f02dcbe0f4ad5af2b9c801ee971bb",
+      "NodeType": "OutputNode",
+      "Inputs": [
+        {
+          "Id": "8c44b5d56ddc472d84fa0ce021ddfc09",
+          "Name": "",
+          "Description": "",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "Outputs": [],
+      "Replication": "Disabled",
+      "Description": "Eine Funktionsausgabe zur Verwendung mit benutzerdefinierten Blöcken"
+    }
+  ],
+  "Connectors": [
+    {
+      "Start": "2331f203eba34629bb56910dc0eb9b37",
+      "End": "8c44b5d56ddc472d84fa0ce021ddfc09",
+      "Id": "ada4d8788b2d4bacb746fae03ebd81da",
+      "IsHidden": "False"
+    },
+    {
+      "Start": "c64b2fe213e94b34986186e42fc50323",
+      "End": "fce0d3fbeaa04a7080c0e4e6dccb3bc1",
+      "Id": "7ca80edf822b438699c90839cab9b705",
+      "IsHidden": "False"
+    },
+    {
+      "Start": "8508bbf887c640b78e11210051bd658b",
+      "End": "40df5631adcd4c61a7ee4ddc8c09cc4b",
+      "Id": "32c47d96dac7417c8c12cc0ba5a7f36d",
+      "IsHidden": "False"
+    },
+    {
+      "Start": "8508bbf887c640b78e11210051bd658b",
+      "End": "d79124100d5543099fd2e8764bc3ec7b",
+      "Id": "48b9c5f1442b4903b7eee3884163ccb4",
+      "IsHidden": "False"
+    },
+    {
+      "Start": "88cea336fa9e4549abb11602524c8521",
+      "End": "7f7b28a903614b848aeb7939016e0a3b",
+      "Id": "81871803172f4ce4a3999fc2c2c2e1e9",
+      "IsHidden": "False"
+    }
+  ],
+  "Dependencies": [],
+  "NodeLibraryDependencies": [],
+  "Author": "None provided",
+  "Bindings": [],
+  "View": {
+    "Dynamo": {
+      "ScaleFactor": 1.0,
+      "HasRunWithoutCrash": false,
+      "IsVisibleInDynamoLibrary": true,
+      "Version": "2.19.3.6394",
+      "RunType": "Manual",
+      "RunPeriod": "1000"
+    },
+    "Camera": {
+      "Name": "_Hintergrundvorschau",
+      "EyeX": -17.0,
+      "EyeY": 24.0,
+      "EyeZ": 50.0,
+      "LookX": 12.0,
+      "LookY": -13.0,
+      "LookZ": -58.0,
+      "UpX": 0.0,
+      "UpY": 1.0,
+      "UpZ": 0.0
+    },
+    "ConnectorPins": [],
+    "NodeViews": [
+      {
+        "Id": "6f21d07906584fbb8ad00e5e3cea879d",
+        "Name": "List.LastItem",
+        "IsSetAsInput": false,
+        "IsSetAsOutput": false,
+        "Excluded": false,
+        "ShowGeometry": true,
+        "X": 831.42225519287911,
+        "Y": 466.66478050573608
+      },
+      {
+        "Id": "b80fb701295a42a0b3da4ee20af77cee",
+        "Name": "List.FirstItem",
+        "IsSetAsInput": false,
+        "IsSetAsOutput": false,
+        "Excluded": false,
+        "ShowGeometry": true,
+        "X": 831.42225519287911,
+        "Y": 318.664780505736
+      },
+      {
+        "Id": "3f6b22e9c8c54dd9a237675ede814374",
+        "Name": "Python Script",
+        "IsSetAsInput": false,
+        "IsSetAsOutput": false,
+        "Excluded": false,
+        "ShowGeometry": true,
+        "X": 557.02225519287913,
+        "Y": 392.664780505736
+      },
+      {
+        "Id": "70f60e859fc74566901fba24a86313c9",
+        "Name": "Input",
+        "IsSetAsInput": false,
+        "IsSetAsOutput": false,
+        "Excluded": false,
+        "ShowGeometry": true,
+        "X": 222.62225519287915,
+        "Y": 392.664780505736
+      },
+      {
+        "Id": "3e764157e5724b5a8cc7a08497954383",
+        "Name": "Output",
+        "IsSetAsInput": false,
+        "IsSetAsOutput": false,
+        "Excluded": false,
+        "ShowGeometry": true,
+        "X": 1107.4222551928792,
+        "Y": 318.664780505736
+      },
+      {
+        "Id": "177f02dcbe0f4ad5af2b9c801ee971bb",
+        "Name": "Output",
+        "IsSetAsInput": false,
+        "IsSetAsOutput": false,
+        "Excluded": false,
+        "ShowGeometry": true,
+        "X": 1107.4222551928792,
+        "Y": 466.664780505736
+      }
+    ],
+    "Annotations": [],
+    "X": 218.7050000000001,
+    "Y": -43.214999999999918,
+    "Zoom": 0.8425
+  }
+}
\ No newline at end of file
diff --git a/nodes/2.x/Floor.ResetSlabShape.dyf b/nodes/2.x/Floor.ResetSlabShape.dyf
deleted file mode 100644
index 5b9dedf9..00000000
--- a/nodes/2.x/Floor.ResetSlabShape.dyf
+++ /dev/null
@@ -1,216 +0,0 @@
-{
-  "Uuid": "9397b95e-5c86-43b3-b852-eb5176829d2e",
-  "IsCustomNode": true,
-  "Category": "Clockwork.Revit.Elements.Actions",
-  "Description": "Resets the slabshape of a floor",
-  "Name": "Floor.ResetSlabShape",
-  "ElementResolver": {
-    "ResolutionMap": {
-      "Floor": {
-        "Key": "Revit.Elements.Floor",
-        "Value": "RevitNodes.dll"
-      }
-    }
-  },
-  "Inputs": [],
-  "Outputs": [],
-  "Nodes": [
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Function, DynamoCore",
-      "FunctionSignature": "1897bf8b-8893-4f0e-8548-2f7adad9609c",
-      "FunctionType": "Graph",
-      "NodeType": "FunctionNode",
-      "Id": "871b302eab5e4f31836a106d17da696a",
-      "Inputs": [
-        {
-          "Id": "f9082d18e9794f3b81b047ddbf7027c6",
-          "Name": "roof",
-          "Description": "Input #1",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [
-        {
-          "Id": "436984985185491dbfa8286a46c75213",
-          "Name": "roof",
-          "Description": "Output #1",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        },
-        {
-          "Id": "6912338c6d20456eb211194b54ae225d",
-          "Name": "success",
-          "Description": "Output #2",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Auto",
-      "Description": "Resets the slabshape of a roof"
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Symbol, DynamoCore",
-      "NodeType": "InputNode",
-      "Parameter": {
-        "Name": "floor",
-        "TypeName": "Revit.Elements.Floor",
-        "TypeRank": -1,
-        "DefaultValue": null,
-        "Description": ""
-      },
-      "Id": "3f136315881948e692ef567344460e49",
-      "Inputs": [],
-      "Outputs": [
-        {
-          "Id": "93c99a4b7d754f36a96f89ee34e2c40f",
-          "Name": "",
-          "Description": "Symbol",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Disabled",
-      "Description": "A function parameter, use with custom nodes.\r\n\r\nYou can specify the type and default value for parameter. E.g.,\r\n\r\ninput : var[]..[]\r\nvalue : bool = false"
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Output, DynamoCore",
-      "NodeType": "OutputNode",
-      "ElementResolver": null,
-      "Symbol": "floor",
-      "Id": "974e3604375647219400c88c40c99b04",
-      "Inputs": [
-        {
-          "Id": "a3757cbbea014dc79fc94ee061007097",
-          "Name": "",
-          "Description": "",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [],
-      "Replication": "Disabled",
-      "Description": "A function output, use with custom nodes"
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Output, DynamoCore",
-      "NodeType": "OutputNode",
-      "ElementResolver": null,
-      "Symbol": "success",
-      "Id": "84efbda32538438c817a28f0faeb5d56",
-      "Inputs": [
-        {
-          "Id": "d651211e07bc4398bde0891d5c35ceac",
-          "Name": "",
-          "Description": "",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [],
-      "Replication": "Disabled",
-      "Description": "A function output, use with custom nodes"
-    }
-  ],
-  "Connectors": [
-    {
-      "Start": "436984985185491dbfa8286a46c75213",
-      "End": "a3757cbbea014dc79fc94ee061007097",
-      "Id": "6488c4656c8849fabbe863b69ce04c74"
-    },
-    {
-      "Start": "6912338c6d20456eb211194b54ae225d",
-      "End": "d651211e07bc4398bde0891d5c35ceac",
-      "Id": "857c73d78fa54ab285a22887e67fb614"
-    },
-    {
-      "Start": "93c99a4b7d754f36a96f89ee34e2c40f",
-      "End": "f9082d18e9794f3b81b047ddbf7027c6",
-      "Id": "43caf0adaab64a1ba81ee64e6e43b575"
-    }
-  ],
-  "Dependencies": [
-    "1897bf8b-8893-4f0e-8548-2f7adad9609c"
-  ],
-  "Bindings": [],
-  "View": {
-    "Dynamo": {
-      "ScaleFactor": 1.0,
-      "HasRunWithoutCrash": false,
-      "IsVisibleInDynamoLibrary": true,
-      "Version": "2.0.1.5055",
-      "RunType": "Manual",
-      "RunPeriod": "1000"
-    },
-    "Camera": {
-      "Name": "Background Preview",
-      "EyeX": -17.0,
-      "EyeY": 24.0,
-      "EyeZ": 50.0,
-      "LookX": 12.0,
-      "LookY": -13.0,
-      "LookZ": -58.0,
-      "UpX": 0.0,
-      "UpY": 1.0,
-      "UpZ": 0.0
-    },
-    "NodeViews": [
-      {
-        "Id": "871b302eab5e4f31836a106d17da696a",
-        "IsSetAsInput": false,
-        "IsSetAsOutput": false,
-        "Name": "Roof.ResetSlabShape",
-        "ShowGeometry": true,
-        "Excluded": false,
-        "X": 256.0,
-        "Y": 62.0
-      },
-      {
-        "Id": "3f136315881948e692ef567344460e49",
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-        "ShowGeometry": true,
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-        "X": -31.0,
-        "Y": 62.0
-      },
-      {
-        "Id": "974e3604375647219400c88c40c99b04",
-        "IsSetAsInput": false,
-        "IsSetAsOutput": false,
-        "Name": "Output",
-        "ShowGeometry": true,
-        "Excluded": false,
-        "X": 546.0,
-        "Y": 33.0
-      },
-      {
-        "Id": "84efbda32538438c817a28f0faeb5d56",
-        "IsSetAsInput": false,
-        "IsSetAsOutput": false,
-        "Name": "Output",
-        "ShowGeometry": true,
-        "Excluded": false,
-        "X": 546.0,
-        "Y": 117.0
-      }
-    ],
-    "Annotations": [],
-    "X": 233.0,
-    "Y": 209.0,
-    "Zoom": 1.0
-  }
-}
\ No newline at end of file
diff --git a/nodes/2.x/Roof.ResetSlabShape.dyf b/nodes/2.x/Roof.ResetSlabShape.dyf
deleted file mode 100644
index 5b300beb..00000000
--- a/nodes/2.x/Roof.ResetSlabShape.dyf
+++ /dev/null
@@ -1,459 +0,0 @@
-{
-  "Uuid": "1897bf8b-8893-4f0e-8548-2f7adad9609c",
-  "IsCustomNode": true,
-  "Category": "Clockwork.Revit.Elements.Actions",
-  "Description": "Resets the slabshape of a roof",
-  "Name": "Roof.ResetSlabShape",
-  "ElementResolver": {
-    "ResolutionMap": {}
-  },
-  "Inputs": [],
-  "Outputs": [],
-  "Nodes": [
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.CustomNodes.Function, DynamoCore",
-      "FunctionSignature": "44ac4888-4aa4-49a9-9344-23b729c11df9",
-      "FunctionType": "Graph",
-      "NodeType": "FunctionNode",
-      "Id": "affd73f45ff2447a8938f4ee67470058",
-      "Inputs": [
-        {
-          "Id": "9fa5dabe084c446690abd831d16fd94a",
-          "Name": "unknownItem",
-          "Description": "var[]..[]",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        },
-        {
-          "Id": "6e7fea54d89d4017ac5c2b408df2aaa2",
-          "Name": "seq",
-          "Description": "var[]..[]",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [
-        {
-          "Id": "5ecb9779f0cb472580cd7964a872f770",
-          "Name": "",
-          "Description": "return value",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Auto",
-      "Description": "If the unknown item is not a list but rather a single item, only the first item of the list (input \"seq\") will be returned."
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
-      "NodeType": "FunctionNode",
-      "FunctionSignature": "DSCore.List.LastItem@var[]..[]",
-      "Id": "6f21d07906584fbb8ad00e5e3cea879d",
-      "Inputs": [
-        {
-          "Id": "d79124100d5543099fd2e8764bc3ec7b",
-          "Name": "list",
-          "Description": "List to get the last item of.\n\nvar[]..[]",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
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\ No newline at end of file