3rd person character action on UI button clicked

Hi! I am trying to cast Animation to third person character with UI button.
I created animation montage and adjusted character blueprint (added a default slot).

But now in a widget when I create in the event graph on clicked node for a UI button and connect it to play montage there is no mesh for selection in skeletal mesh component node to connect to. And I believe it is not working because of this. What should I do for a character animation to play from a widget button?

It works only with input key selection on a keyboard from third person character blueprint.