diff --git a/main.go b/main.go
index 40882fc..d623c16 100644
--- a/main.go
+++ b/main.go
@@ -21,9 +21,10 @@ func main() {
 	println(cell.Value.(int))
 
 	ss.UpdateCell(cell00.Uuid, `15`)
-	println(cell.Value.(int))
+	println(`Cell00 value is now:`, cell00.Value.(int))
+	println(`Cell value is now:`, cell.Value.(int))
 
 	cell03, _ := ss.GetCell("Sheet1", 0, 3)
-	ss.UpdateCell(cell03.Uuid, `=Min(A1:C4)`)
+	ss.UpdateCell(cell03.Uuid, `=Sum(A1:C4)`)
 	println(cell03.Value.(int))
 }
diff --git a/src/core/computation.go b/src/core/computation.go
index 97ffaba..4c63a93 100644
--- a/src/core/computation.go
+++ b/src/core/computation.go
@@ -104,7 +104,7 @@ func (cell *Cell) dirty(visited mapset.Set[ReferenceId]) error {
 			ss.RangeDirtyParents[currRange.Uuid] = mapset.NewThreadUnsafeSet[ReferenceId]()
 		}
 		// Tracks the cells that need to be recomputed before recomputing the range.
-		ss.RangeDirtyParents[cell.Uuid].Add(currRange.Uuid)
+		ss.RangeDirtyParents[currRange.Uuid].Add(cell.Uuid)
 	}
 
 	// Dirty all dependent cells.
@@ -152,8 +152,8 @@ func (ss *Spreadsheet) recomputeValues() {
 			Cell: currCell,
 		})
 		currCell.Value, currCell.Error = res, err
-		currCell.Value = res
 	}
+	ss.DirtySet.Clear()
 }
 
 func (ss *Spreadsheet) cleanupRanges() {
diff --git a/src/core/read.go b/src/core/read.go
index eda7d6a..4202910 100644
--- a/src/core/read.go
+++ b/src/core/read.go
@@ -75,7 +75,7 @@ func (cr *Range) GetUuid() ReferenceId {
 }
 
 func (cr *Range) LowAtDimension(dimension uint64) int64 {
-	if dimension == 0 {
+	if dimension == 1 {
 		return int64(cr.StartRow)
 	} else {
 		return int64(cr.StartCol)
@@ -83,7 +83,7 @@ func (cr *Range) LowAtDimension(dimension uint64) int64 {
 }
 
 func (cr *Range) HighAtDimension(dimension uint64) int64 {
-	if dimension == 0 {
+	if dimension == 1 {
 		return int64(cr.EndRow)
 	} else {
 		return int64(cr.EndCol)
@@ -91,10 +91,10 @@ func (cr *Range) HighAtDimension(dimension uint64) int64 {
 }
 
 func (cr *Range) OverlapsAtDimension(interval augmentedtree.Interval, dimension uint64) bool {
-	if dimension == 0 {
-		return int64(cr.StartRow) <= interval.HighAtDimension(uint64(dimension)) && int64(cr.EndRow) >= interval.LowAtDimension(uint64(dimension))
+	if dimension == 1 {
+		return int64(cr.StartRow) <= interval.HighAtDimension(dimension) && int64(cr.EndRow) >= interval.LowAtDimension(dimension)
 	} else {
-		return int64(cr.StartCol) <= interval.HighAtDimension(uint64(dimension)) && int64(cr.EndCol) <= interval.LowAtDimension(uint64(dimension))
+		return int64(cr.StartCol) <= interval.HighAtDimension(dimension) && int64(cr.EndCol) >= interval.LowAtDimension(dimension)
 	}
 }