>Strange, it gives error "The data source for this object must be a variable reference".
>When I do
>THIS.txt.ControlSource = THIS.Controlsource, then it works.
>But
>THIS.txt.ControlSource = THIS.ControlSource + "/10" then it gives the error.

Can you try assigning the controlsource in the property sheet or as 'MyTable.MyColumn/10' if in the code?

Also, check my _Assign method. You can try to do the same thing, have a property for the main value and just set ControlSource to be

tcSource + "/10", don't mention ControlSource in the code the way you do.