diff --git a/doc/grid_radius_assign.md b/doc/grid_radius_assign.md
index 52fd15c..3812175 100755
--- a/doc/grid_radius_assign.md
+++ b/doc/grid_radius_assign.md
@@ -20,7 +20,8 @@ This pipeline updates the Keypoint dimension of all points with classification 1
           "src_domain" : "Classification[1:2]",
           "reference_domain" : "Classification[6:6]",
           "radius" : 1,
-	  "output_name_attribut": "radius"
+	  	  "output_name_attribut": "radius",
+	  	  "is3d": True
       },
       "output.las"
   ]
@@ -43,9 +44,9 @@ Options
 
 **output_name_attribut**: The name of the new attribute'. [Default: radius]
 
-**3d_search**: Search in 3d (as a ball). [Default: false]
+**is3d**: Search in 3d (as a ball). [Default: false]
 
-**2d_search_above**: If 3d_search is false, take points only if exists points between the referent point and a distance above. [Default: 0.]
+**is2d_above**: If is3d is false, take points only if exists points between the referent point and a distance above. [Default: 0.]
 
-**2d_search_bellow**: If 3d_search is false, take points only if exists points between the referent point and a distance bellow. [Default: 0.]
+**is2d_bellow**: If is3d is false, take points only if exists points between the referent point and a distance bellow. [Default: 0.]
 
diff --git a/macro/macro.py b/macro/macro.py
index 809b410..f4f5b5f 100755
--- a/macro/macro.py
+++ b/macro/macro.py
@@ -19,7 +19,7 @@ def add_radius_assign(pipeline, radius, search_3d, condition_src, condition_ref,
                                           "REF_DOMAIN = 0", f"REF_DOMAIN = 1 WHERE {condition_ref}",
                                           "radius_search = 0"])
     pipeline |= pdal.Filter.radius_assign(radius=radius, src_domain="SRS_DOMAIN",reference_domain="REF_DOMAIN",
-                                          output_dimension="radius_search", search_3d=search_3d)
+                                          output_dimension="radius_search", is3d=search_3d)
     pipeline |= pdal.Filter.assign(value=condition_out,where="radius_search==1")
     return pipeline
 
diff --git a/src/filter_radius_assign/radius_assignFilter.cpp b/src/filter_radius_assign/radius_assignFilter.cpp
index 754dfef..4ac5c9a 100644
--- a/src/filter_radius_assign/radius_assignFilter.cpp
+++ b/src/filter_radius_assign/radius_assignFilter.cpp
@@ -36,9 +36,9 @@ void RadiusAssignFilter::addArgs(ProgramArgs& args)
     args.add("reference_domain", "Selects which points will be considered as potential neighbors", m_args->m_referenceDomain, "REF_DOMAIN");
     args.add("radius", "Distance of neighbors to consult", m_args->m_radius, 1.);
     args.add("output_dimension", "Name of the added attribut", m_args->m_outputDimension, "radius");
-    args.add("search_3d", "Search in 3d", m_args->search3d, false );
-    args.add("search_2d_above", "if search in 2d : filter point above the distance", m_args->m_search_bellow, 0.);
-    args.add("search_2d_bellow", "if search in 2d : filter point bellow the distance", m_args->m_search_above, 0.);
+    args.add("is3d", "Search in 3d", m_args->search3d, false );
+    args.add("is2d_above", "if search in 2d : filter point above the distance", m_args->m_search_bellow, 0.);
+    args.add("is2d_bellow", "if search in 2d : filter point bellow the distance", m_args->m_search_above, 0.);
 }
 
 void RadiusAssignFilter::addDimensions(PointLayoutPtr layout)
diff --git a/test/test_radius_assign.py b/test/test_radius_assign.py
index 4bc759b..07a04bb 100755
--- a/test/test_radius_assign.py
+++ b/test/test_radius_assign.py
@@ -52,9 +52,9 @@ def run_filter(arrays_las, distance_radius, search_3d, distance_cylinder=0. ):
                 "src_domain": "SRS_DOMAIN",
                 "reference_domain": "REF_DOMAIN",
                 "output_dimension": "radius_search",
-                "search_3d": search_3d,
-                "search_2d_above": distance_cylinder,
-                "search_2d_bellow": distance_cylinder,
+                "is3d": search_3d,
+                "is2d_above": distance_cylinder,
+                "is2d_bellow": distance_cylinder,
             }
         ]