How do I edit a Tile set using blueprints?

Hey, I’ve been trying to edit specific tiles of an existing tile set using blueprints but haven’t gotten much luck.
This is the actor I use to spawn in the tile map using blueprints:
View port:
(The tile map it uses has 4 ground tiles at the bottom default-ly)
This is the tile set I use:
(Each tile is 32x32)
This is what I use to spawn in the actor which uses the tile set:

I can spawn in the actor just fine, the problem is editing specific spots on the tile map.
Any help is much appreciated!