Application/Object defined error?

[Myles]

Okay so using some code i have tried and tried to get this to work in
different ways but cant figure out why it's not working


For easy sakes we will say that

intRowNum = 2
strDescription = "Comment goes here"

' This should basically have theCell return as like "D2" or whichever letter
it is

theCell = ColumnLetter(LastColumn(intRowNum)) & intRowNum
Range(theCell).AddComment (strDescription)

Function LastColumn(Row As String) As String

' This gets the last column in a row when the row is specified

LastColumn = ActiveSheet.Cells(intRowNum,
Columns.Count).End(xlToLeft).Column + 1
End Function

Function ColumnLetter(ColumnNumber As Integer) As String

' This converts the column back to the appropriate letter

If ColumnNumber > 26 Then
ColumnLetter = Chr(Int((ColumnNumber - 1) / 26) + 64) & _
Chr(((ColumnNumber - 1) Mod 26) + 65)
Else
ColumnLetter = Chr(ColumnNumber + 64)
End If
End Function



Basically i already know what the row is, i just need to find the last
column of that row that has no text in it, and then add my own comment to it.

Thanks for the help guys!