>Hello Boris
I tried your suggestion, perhaps I coded incorrectly, I receive the error "Operator/Operand Type Mismatch". The values from the comboboxes are strings ( character values ). I'll keep trying.

Regards,
Carmen
You can try this:
>c_filter = "!ps_printed .and. ordno >= " + thisform.combo1.value +" .and. ordno <= " + thisform.combo2.value
>
>SET FILTER TO &c_filter
>Ofcource that is valid if the value of comboboxes is string.
>
>HTH
>
>Boris