I want to control null layers that have their position directly parented (via expression) by using a

[Bunny.c]

I parented the position of the puppet pin 'L1' to the null layer 'L1',
and the pin 'L2' to the null layer 'L2'.
The expression used is: thisComp.layer("L1").transform.position

Then, I parented both null layers 'L1' and 'L2' to the null layer 'L' to control them together
(using the pick whip in the "Parent & Link" section to link the layers themselves, not just the position).

However, the control doesn’t work.
The null layer 'L' does not affect them as expected.

[Dan Ebberts · Accepted solution]

Try changing your puppet pin L1 expression to this:

L1 = thisComp.layer("L1");
L1.toComp(L1.anchorPoint);

and your puppet pin L2 expression to this:

L2 = thisComp.layer("L2");
L2.toComp(L2.anchorPoint);

[Bunny.c]

Wow, this is exactly the result I was hoping for. Thank you so much!!