textalign changes when seting rowsource from code

[tango1948]

Hi,
I have a listbox with textalign = right.
when the form loads with the listbox rowsource set the text is (right) aligned correctly.
If I use the afterupdate event from a combobox to set the rowsource value the textbox comes out lef taligned, I've tried setting the textalign=3 in code but it doesn't help.
Any suggestions how to keep the listbox text right aligned.

Thanks for any help

David