UDF question query

Hi Sap Experts,

I have been using more and more FMS queries lately which are really useful to users.

One of our users is using a FMS which copies information from the remarks into the customer ref field

the query uses SELECT $[$16.0.1] and refreshs the customer ref field after the details are entered into remarks. So based on that

I am wondering whether or not its possible copy information entered into a UDF field based on the line level/row and copy it into another UDF on the header level?

Reason being we used the same information in both UDF's but for different reports -

Is this possible?

Is it another select like above but with the UDF field?

thanks

Paul