Okay, I ran into a problem with this approach. I decided to try it myself - in Control Rig I created an array variable, for each element from which an action is performed, in the animation BP - a variable with the same type.
So the problem: sending the values of the variable from the AnimBP to the CR does nothing. The value of the array in it remains as by default (empty or with some values). I first used arrays of Rig Element Key, but even when I changed it to just Name - nothing.
There were no such problems with ordinary single variables. Can anyone suggest what’s wrong?