Particle System - Set Actor/Material Parameter

Development Programming & Scripting Blueprint
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1

I know how to use things like set float or vector parameter, but even though “set actor parameter” and “set material parameter” shows up in the context menu of a particle system, I don’t get what I can modify with these.

What modules would have these material or actor parameters?

With the material parameter, would it be possible to change the material (under required) of an emitter?

2

Things like beams in particles can have Targets that are actors. So you could change that.

Materials can have parameters like color that you might want to change.