>>Actually, after I minute's thought, you probably up to something. For the state we're using a combobox with some custom code. Perhaps, there is an assignation there...
>
>If you don't find it soon, try setting a breakpoint.

It is the States combobox. If we switch to a textbox, the form behaves correctly. I think, there is something in internal behavior of combobox, which causes that problem. Perhaps, we need to assign controlsource after the Init and not in the property sheet.

Here is the Init code, may be you have better idea in order to solve that little problem:

*---------------------- Location Section ------------------------
*   Library: 	Acustomcontrols.vcx
*   Class: 		Cbostates
*   Method: 	Init()
*----------------------- Usage Section --------------------------
*)  Description:
*)

*   Scope:      Public
*   Parameters:
*$  Usage:
*$
*   Returns:
*--------------------- Maintenance Section ----------------------
*   Change Log:
*       CREATED 	04/13/2004 - JMW
*		MODIFIED    04/21/2005 - NN
*----------------------------------------------------------------
if !dodefault()
	return .f.
endif

if not used('c_States') and ! States_List('c_States')
	return .f.
endif

local lnSelect, lnRows, lnCols, laFields[1]
lnSelect = select()
select c_States
lnCols = afields(laFields)
lnRows = reccount()
dimension this.aRowSource [m.lnRows, m.lnCols]

copy to array this.aRowSource

this.rowsourcetype = 5 && Array
this.boundto = .t.
this.rowsource = "This.aRowSource"

select (m.lnSelect)