[Closed] Custom Attribute: Wired Functions Animation

I don’t know if this is possible and got stuck:

I have an object.
There is a custom attribute added to the object.
The Custom attribute defines a function and a slider.

If I change the slider the function is executed does stuff (ie print “I am function”).

Now I create another object and wire the position (x) to the slider.
If I move the new object the slider value is updated but the function is not executed.

It this impossible?
What am I missing?

Georg