Procedural Mesh and Player Position

Hayhoo,
so I am trying to make an 3 Dimensional 6win game (you have to get 6 fields in a row). I have made a procedural play field and my problem is now that I have no Idea how I could tell unreal in wich field the player is located.

The goal I want to reach is that when a player marks a field the mesh at this location is replaced with another one (same size) based on the player id

I’ll mark this as answered