FM13: grabbing one bit of data from a portal
I don't know why I cannot figure this out on my own, so here goes.
We have a FM13 database that has a 6-row portal. In each row, users first select from a value list (a type of concert ticket), then type in the number of tickets available and the price of that ticket in the remaining boxes on the row.
One of the potential values that users can pick from the value list is Comps. So for a particular concert the user could allocate 50 tickets to comps.
How do I reference that typed in value of 50 in a separate field that's not in the portal? I essentially want to reference it, or copy it, to a different field. I tried LOOKUP, GETFIELD, but I can't copy this field that's inside a portal to another field.
This is probably laughably easy and I'm overlooking the obvious, but I'm at wit's end.