Calling module procedure from sheet procedure

Newbie non developer here...

I have created a procedure "AutoFitMergedCellRowHeight()" in Module1 that I can manually run against a field in a spreadsheet that that successfully resizes a cell height depending on the amount of text entered:

Sub AutoFitMergedCellRowHeight()
Dim CurrentRowHeight As Single, MergedCellRgWidth As Single
Dim CurrCell As Range, RangeWidth As Single

Dim ActiveCellWidth As Single, PossNewRowHeight As Single
If ActiveCell.MergeCells Then
With ActiveCell.MergeArea
If .Rows.Count = 1 And .WrapText = True Then
Application.ScreenUpdating = False
CurrentRowHeight = .RowHeight
ActiveCellWidth = ActiveCell.ColumnWidth
RangeWidth = .Width

For Each CurrCell In Selection
MergedCellRgWidth = CurrCell.ColumnWidth + MergedCellRgWidth
Next
.MergeCells = False
.Cells(1).ColumnWidth = MergedCellRgWidth
While .Cells(1).Width < RangeWidth
.Cells(1).ColumnWidth = .Cells(1).ColumnWidth + 0.5
Wend
.Cells(1).ColumnWidth = .Cells(1).ColumnWidth - 0.5

.EntireRow.AutoFit
PossNewRowHeight = .RowHeight
.Cells(1).ColumnWidth = ActiveCellWidth
.MergeCells = True
.RowHeight = IIf(CurrentRowHeight > PossNewRowHeight, _
CurrentRowHeight, PossNewRowHeight)
End If
End With
End If
End Sub


I have also created a procedure under Sheet4:

Sub Worksheet_Change(ByVal Target As Range)

'MsgBox "You just changed " & Target.Address
Call Module1.AutoFitMergedCellRowHeight

End Sub

I effective want a cell to automatically resize itself after the cell value has changed.

The manually triggered resize works fine but the auto resize does not.

Any insight would be appreciated.

EricLCTCS