I can't change a variable from a different blueprint

[besplash]

I have 2 blueprints where the bottom one has a reference to the top one. During the play montage you can see on the top blueprint, I want to be able to change the “DefaultAttacks” boolean variable if I use my left mouse button. I’m currently doing it as shown in the bottom blueprint.
Unfortunately I can cast into the top blueprint and call the method, but it doesn’t change the variable as it is supposed to be. If my montage finishes, it doesn’t matter if I changed the “DefaultAttacks” boolean to false, it is always true and thus I can’t cancel the event to break out of my attack.

Does anyone know why?

[besplash]

The bottom blueprint had no right to modify the top blueprint, so the multicast on “StopDefaultAttack” did nothing to the server. I had to run the custom event on Server from Client. Now it’s working.