UE5 Cinematic Sequencer Trigger Events Not working with Timelines

[birmelg]

So I have two questions that I am stuck on and need any assistance. So I am trying to create a short cinematic and it’s my first time using Event triggers inside of the sequencer. I have the event all hooked up and ready to go. There is a scene where I want my fighter jet to slowly turn on its engine using the skeletal mesh-specific material. Inside the BP for the jet I have an event with a timeline using a simple float curve.

• My first question is how do I set a scalar parameter On a skeletal mesh that has multiple materials but only need to set one of them. I have a parameter already set in my master material that has an emissive intensity. Just need to know how to Get Material index and hook it up to a set scalar parameter.
  

  

• The second issue I have is the timeline not working with the sequencer. When the event keyframe is triggered in the sequencer noting happens on playback if the BP is hooked up to a timeline. But if you Just hook it up straight to a Set scalar parameter node the emissive intensity of my materials works. Not sure why timelines are not doing anything on playback with my emissive parameters.

Thank you so much for your time. Looking forward to some advice.

[birmelg]

So I figure out how to select a specific material index from a skeletal mesh and set a scalar parameter value for that one Material ID. You have to create a Dynamic Material Instance and then select the material index you want to modify. Add the source material you want to update then in the return value, promote to variable, and then set the variable. You then drag off the Output pin and set scalar parameter for that dynamic material instance you just created. Vualaaaa,

I guess my only question is why hooking up a timeline to the parameter value does noting in sequencer playback.