How to put the reference of an active tab in a variable

Discussion created by jeurissenb on Jan 19, 2017
Latest reply on Jan 19, 2017 by philmodjunk

I want to make my database a little bit acting like a webbrowser. Therefore I have to know exactly the latest used active tab position. I then would like to place this position in a variable to make a button to go back not only to the latest active window but also to the latest correct tab position.

What formule do I have to us?