Actor-Pointer-UPROPERTY

If i understood correctly we have the same issue.

I am coding a boardgame blueprint in c++. the board will be filled with 5 different type of tiles. my tiles are other blueprints i want to duplicate.
To pass this to my friend and let him chose which tiles i just created :

UPROPERTY(EditAnyWhere, BlueprintReadWrite, Category = “Maze”)
AActor* tileType1;

UPROPERTY(EditAnyWhere, BlueprintReadWrite, Category = “Maze”)
AActor* tileType5;

But within the board blueprint i can’t fill in the actors values. I tried to make them child actor components but doesn’t work neither.