Marcia,

>Add a customer property to your combo class called uOldVal.<

I put ~ LPARAMETERS uOldVal,"" ~ into the addProperty of the combo (is that not enough to add the property?). The code in the gotfocus event looks for uOldVal (This.uOldVal = this.value). When I clicked on the grid (triggering the valid event), I got the error message telling me that it couldn't find uOldVal.

This brings to mind a question. If the recordsource of a grid is set to an alias, Column(n).controlsource is left as (none), and the controlsource of the combobox is used to set the field of the alias, does the combo or the grid itself display the data?

Thanks
JD