Getting valuefrom a field in one form to populate a field in another form

Getting valuefrom a field in one form to populate a field in another form

Hello,

I'm fairly new to Creator, I am trying to copy the value from one field in a form to the field in another form.
I have a form called Allocate_Tickets_Form and another called  add_edit_schools.

I want to copy the data from a radio button in the Allocated_Tickets_Form called Tickets_Allocated to a decision box in the add_edit_schools form called Tickets_Allocated.

I don't know if I'm doing this right, but I have tried to add this within the succesful form submission in the Allocate_Tickets_Form

I have looked on these forums and youtube, but I can't get anything to work. Can anyone help me please?