Can't create tab-/ keyboard combo on Mac

I'm on a Macbook Pro trying to create a tab-/ (backslash) combo. Can't seem to get this to work compared with other modifier keys that are fine.

I can only create tab but not a combo with tab. Any way to do this?

no, tab is not a modifier key, thus you can’t use it as such with BTT ;-(

Ah thanks for confirming that. I thought I was missing something. I'm guessing its a MacOS limitation. I guess I will have to use the mouse click actions to select the desired page element as an alternative unless theres something else?