The walls are made of blocks.

With the last sentence, i mean that I do have a character i can move, but it is not yet loaded in the script nor in the level.

I don't know how to call up an entity i can move with my arrows in a script. I thought i had done it with this script, but I cant combine the walking part with a character i can walk... So the script is there, but i can use it yet, and i dont understand why.