Can you randomize the tiles a laid out tilemap level uses?

If I draw a room with the tilemap object, is it possible to change the tiles that are used in a random way? In effect - change wall tile 1 for wall tile 2 or 3? Thanks.

I suspect if you put a number in the file name, use a variable and random(1,100) as example, the load that file as the tile, that might work, so you could spawn based on that random number, I am doing something similar in my game with spawning random enemies in my cyborg family group.