Grappling hook & surface types

Development Programming & Scripting Blueprint
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1

Setup different collision channels for hookable surfaces and setup the correct surfaces to that channel

2

I’m making the same type of 3rd person grappling hook as in this video:

https://www.youtube.com/watch?v=aphg7Nl7Rn0

But it lacks any hookable surface types, the hook attaches on everything on the map. How do i make the grappling hook attach to only a certain types of surfaces?