How to activate and deactivate multiple VFX from the sequencer with one button?

Hi all. Often I have to activate multiple VFX in the sequencer that I place on one object. This is not very convenient, since the sequencer does not have the ability to activate several VFX at once with one click (at least I am not aware of such a possibility). I thought about writing a blueprint so that I could activate dozens of VFX with a single button (by triggering an event from the sequencer or toggling a variable), but I ran into difficulties. Just getting dozens of VFX to activate without conditions is not difficult, but as soon as I try to enter a condition (if the boolean variable is 1 - activate, if 0 - deactivate) nothing comes out. I’m not a programmer and I don’t understand how to solve this problem correctly.