This is very simple I am sure.
I have a dynamically selected data - selected using :last_item. It is the percentage of Active users in a group. However inorder to get the percentage of Passive users i need in a text box i need to do 1-active_users:last_item.
How do i enter the static item 1 into the start of the formula so i can minus the active_user to get the desired outome?