I want to send the value of a variable in a child session to a parent session, both are standard sessions that I can't modify any code. This parent session is a multi table type. The satellite session is the child.
I have tried with "put.var, export" in child but I get error from trusted environments

In the child session, when a record is selected (mark.occur): send value to calculated field in parent session.
The parent session tries to get that value
Tahnk you in advance