I have asked this question in the VR section also but did not get any response, i tried to get information on the internet but it just did not cover what i need. I am stuck for days searching and trying to understand how to solve this.
I have the Linetrace setup, i can destroy an BP_mesh at a distance by only looking at it, so Linetrace works.
Goal=
It’d be best to trigger the matinee from the level BP. Set up an event dispatcher on your BP_mesh actor, then call it like a normal function. Use a custom event in BP_mesh and call your event dispatcher from that event. On your line trace, like you would normally apply damage, you can cast to BP_mesh and call the function. Reference BP_mesh in the level BP, then drag the reference wire out into the grid, drop it, and type ‘Assign <event dispatcher>’. Get a reference to the Matinee, then off the event that was just created, play the matinee sequence.
Alternatively, if the BP_mesh should take damage normally, leave your set up the way it is. In the level BP, instead of referencing BP_mesh, you can add an event. Add ‘OnAnyDamage’ and off that play the matinee.
I have the next three setups, probably i do something very wrong because it does not work yet, 
the Bp’s are setup like this
1 First Person Character Blueprint
2 Streaming Level Blueprint
3 Mesh_BP (used as trigger when looked at with linetrace)
I did a quick (not for me) tutorial, but OBS didn’t record sound. Fantastic.
https://.youtube.com/watch?v=xZle654v5b0
This is amazing, i have the animation up and running just like in your video! i will work on a picture tutorial tomorrow, also with Linetrace embedded. I think this trick is really powerfull in certain ways of storytelling in VR.
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I did a quick (not for me) tutorial, but OBS didn’t record sound. Fantastic.
I have in my level Bleuprint one succesfull setup for a Bind Event to Trigger (the right one works, see image below)
Now i want to add another Bind Event to a mesh but it won’t let me connect the ‘‘Reset menu trigger’’ to the ‘‘Bind Event to trigger’’?
See the error i get in the image below, why is this setup which is thesame as the right one not working twice?
