The Column's ControlSource property sets this value for all child controls that have a ControlSource themselves.
You do not need to set it for the contained controls. Interesting that it throws an error when you try.

>I have the following code that fill a grid. The problem I have is with the line .Column3.wscombobox1.controlsource = ...
>Err.mess.:Parent object will not allow this property setting for ffecost.wsgrid1.column3.wscombobox1.ControlSource.
>
>WITH THISFORM.Wsgrid1
> .RecordSource = "cur_ffecost"
> .Column1.ControlSource = "cur_ffecost.invcode"
> .Column2.ControlSource = "cur_ffecost.ecost_mnt"
> .Column3.ControlSource = "cur_ffecost.ecost_mnt_cur"
> .Column3.wscombobox1.ControlSource = "cur_ffecost.ecost_mnt_cur"
> .Column4.ControlSource = "cur_ffecost.vendorcode"
> .Column5.ControlSource = "cur_ffecost.vendorname"
> .Column6.ControlSource = "cur_ffecost.ref"
>ENDWITH
>
>The same control, out of the grid, works perfectly:
>THISFORM.wscombobox1.ControlSource = "cur_ffecost.ecost_mnt_cur"
>
>I cannot figure out what is happening here ?
>
>Thanks for any help
>Eric