How to kill and make transparency along the curve of infinite particles through manual deactivation of Niagara in blueprint?

Hi all!

I have a Niagara system. It contains 1 particle with an infinite lifetime. Through blueprint I turn off the system using “deactivate”. How to smoothly reduce the transparency to 0 and then kill the particle? The particle state has useful checkboxes “Let Infinitely Lived Particles Die When Emitter Deactivates” and “Loop Particles Lifetime”. But I don’t understand what needs to be added to the color module so that the transparency decreases only after the system is deactivated. When I add a curve to alpha, it loops over the lifetime of the particle.

Thanks in advance!

Take a look a this :wink:


Thanks a lot! I don’t know how I missed this :face_with_spiral_eyes: