Trace and Postprocessing Volume

I have set up an post processing volume, where I have an highlight material activated( inside blendables). The meshes within the post process volume have the custom render depth set to false.
I want to set the custom render depth to true withing the blueprint by using a trace. This because i want to hover my mouse over a mesh to see it light up.

Anyone can help me out?

have it fixed myself,

turns out i can set the render depth to true via a node.
So trace is not necessary

How did you fix it?

253897-capture.jpg

If i remember correctly, i used blueprints to access the render depth node… So for example, When mouse over, set render depth to true, which makes the post processing visible. I’ve not used trace for this.