trigger a button using a function

Hi,
The upshift paddle of my wheel broke today.
I tried using auto-shift in-game, but that sucks because I have no control over downshifts which is unfortunate.

So, I figured, I make a Simhub Dashboard with a button bound to a key (upshift key), and trigger it automatically if the RPM are > [MyValue]

I have no Idea how to do that. I can can set the function in the button to the trigger, and I see the correct false/true in the preview.
Also when I press the button with the mouse an upshift occurs, but it doesn't trigger automatially.

Can someone help me with that?

Thank you