Hi since you have mentioned that you have been doing it a long time
may be you can give me some check list on which I can do ... I have
been almost trying it for 3 days still I can't get it.

I have a IB_lookupcombe working well outside the grid but the inside
one is not working .... I have been observing it carefully ... when
Iam in edit mode the lookup column appears to be in dark gray color I
suspect that is means that the column is read only, but I have made a
check that I didn't set any property to read only ...

please help me to investigate this one.