Custom Shadow help

Hello all so i’m trying to make a custom shadow where the shadow will be lines when in the dark part. I’m following this tutorial - YouTube but his blueprints he has his dynamic ,aterial connected as a target for his Set Vector Parameter Value however on my end it won’t accept it and will only use a target mesh.

How can I get around this so that I will be able to get the shadow too look like the way this guy has it?

Solution: You drag a pin from Dyn Mat and type- that way you will get it right

it says on the blueprint node. “target is a mesh component”. that’s why it doesn’t accept
seems you have not chosed the correct BP node. when right click menu pops, make sure "context sensetive tick is checked on the top right of it.
drag from the dynamic material and in the poped menu look for “set vector parameter value”.
what you are selecting is “set vector parameter value on material” and is a bit different. you need to give it a mesh.
more on it can be found here: Set Vector Parameter Value on Materials | Unreal Engine Documentation