How can i use a class of actors in my "actors to ignore" on my line trace?

i cant figure out how to have a class instead of a single actor

Use the Get All Actors of Class node:

hmmm…can i set the array output of that to a variable and hook the variable to the line trace?

Yes, no problem with that.

kk thanks! on my other question too!

Is there any way to more efficiently do this for hundreds of types of actors?

Use Object Types, like in the image above;
Everything that should be ignored is set to a different Object Channel group.

I use them in my game to detect which objects can be manipulated or not; Whatever is from the WorldStatic group for example, the Line Trace will ignore.

Ahh ok. So how do I call the array of “world static group” for example?

Create an array from the Object Types input. There you can select which collision channels can be affected by the Line Trace. It’s all in the docs from the link above.