This statement won't execute....

ActiveChart.XYGroups = "=" & strDataSheet & "!R" & _
Trim(Str(intBegRow)) & "C" & Trim(Str(intBegColumn)) & ":R" & _
Trim(Str(intEndRow)) & "C" & Trim(Str(intEndColumn))

Error Message: Method XYGroups of Objectchart failed. Error 1004.

Any ideas?
--
M. Shipp