>Using a memvar scoped to the current procedure is probably not a good idea. At least make it a property of the form so scoping doesn't rear its ugly head...

Between that and he said

TVar = "thisform.DescLine.ControlSource = S["+alltrim(str(CurrRow))+",18]"
&TVar

works fine, I figured the controlsource string was stored in the array, be we could be wrong :-)