Hello Sergey.

If vendor_id filed is a number type than BoundTo = .T. is required for combo to function proprly.

It is obvious from this line of code:

= this.AddListItem(aVendors[nRow,2],nRow,2)

that the Bound column is not numeric since the control's internal list always contains data in character format. If the BoundColumn had a numeric value, this code would cause an error and the control would not even instantiate < s >.