I currently have a field on the customer record which is being dynamically calculated using a formula. I'd like to source this value to a transaction body field, however when I select Customer in source from, I don't see the field in the source list. (I believe it's because I have store value unchecked on the cust entity field, though if I enable store value then the formula doesn't work.) - any ideas how I can source my dynamically calculated field?

probably best to ask elsewhere, the suitescript channel will give you the boring answer of use suitescript