Unable to Click on Excel Dialog

[Raj20091]

Hello,
I am opening an excel and changing a value. When I change the value I get a dialog box(based on validations)

Code

Code:

Set objWorksheet1 = objWorkbook.Worksheets(2)
objWorksheet1.Cells(3,2) = "Oak"
Window("BM_269.xlsm").Dialog("Microsoft Excel").WinButton("OK").Click

The dialog box has focus but QTP is unable to click on the OK button. It doesn’t know the dialog exists. After I click OK manually everything runs fine.

Any suggestions?

Thanks,
Raj