Fields specific records

[#1]

I have a fact table what includes sales and open orders. In a list box if I have the field "Customer Name" I get all customers with sales and open orders.  I want the list box to only show customers with open orders. So I want something like:

CUST_NAME {$ < SO_TYPE = {"ZLOC","ZTHR"}>})

but I can't seem to get the right syntax.

Help.

Thanks,

Stephen

[#2]

Created a second customer name in script for open orders and that did the trick.