Hello guys!
so I´m pretty new in Unreal Engine so please keep that in mind 
. But I learn fast.
I actually try to create some sort of game maybe of my all time favorite tv serie. If you are a fan you already recognize it from the screenshot.
So following problem.
The player has to be within the collision box of the actor and has to look at the right symbol. The next thing he has to do is to left click on the symbol to change the material.
I already figured out how I can change the Material of it but I don´t know how I can connect the other 2 conditions to it. To interact with the right symbol I placed a cube that is invisible on in.
Maybe I had to built the blueprint in the third person character blueprint? Actually I do that in the actor itself.
On the screenshot you can see that I have binded it on Left mouse button.
So to recap:
3 conditions has to be true to change the material.
1)The player has to be within the collision box of the actor
2)The player has to look at the right symbol
3) the player has to press the left mouse button the activate the symbol
If one of the condition are false, nothing has to change. I have to do this for 39 symbols:D
You really don´t have to build the whole blueprint for me, just to give me enough information to think by my own so I can learn 
Thanks really a lot for helping me out!
