[RESOLVED] Populating a Excel cell with a formula

i use this code behind a VB.net button in a loop to look-up pricing from another workbook and it populates some cells and not other cells in column H with 0 if no look-up is found.

Why is it skipping some cells?

column H

Code:

---

Dim lLabourCostFormulaToEnter As String = Nothing
                    lLabourCostFormulaToEnter = "=IF(ISNA(VLOOKUP($B:$B,'" & dDircetory & "[PricingSheet.xls]Pricing'!$A$1:$D$5000,2,FALSE)),0,VLOOKUP($B:$B,'" _
                    & dDircetory & "[PricingSheet.xls]Pricing'!$A$1:$D$5000,2,FALSE))"
                    moSheet1.Cells(row, col).Formula = lLabourCostFormulaToEnter
                    col = col + 1

---

http://i354.photobucket.com/albums/r...psijehb6is.jpg

thx
toe

edit
i thought this was a VB question
the button i speak of is a .net button....

i just put a 0 in the pricing sheet and all seems good
thx