Yet another combobox question

I am using three comboboxs with the following:

rowsource=adult.adult_id,a_first,a_last
rowsourcetype=6 (fields)
incrementalsearch=.t.
style=2 - Dropdown list

I would like the order of the fields (id,first,last) be the same in each combo.
I want each combo to search in a different sort order.

combo1 ordered by adult_id
combo2 ordered by a_first
combo3 ordered by a_last

So far I can only get them to serach in adult_id order, unless I change the order of the rowsource.


Thanks for your help.