How to activate and deactivate particles

[snaiperskaya]

@Framecount;677639

The activate and deactivate nodes cannot control when it should emit and it shouldn’t. When the deactivate node is connected it will emit once and fade off immediately. It should continue emitting until the character move away from the trigger space. I would be grateful if a picture of a BP to show how it can be achieve.

You obviously have to create the logic behind it. As it has been already stated you may want to have a trigger that sends the Activate signal to the emitter. For instance your trap could have a SphereCollision component, you would then bind the OnOverlap event to a function that gets the emitter and activate it.
Not sure where you are getting stuck honestly