increasing the detection radius of the block in the collision procedure with the player

I want that if the player is in a certain zone, for example, 32 by 32 blocks, a certain block will change to another under certain conditions. I use the block in the procedure in x y z, but I am limited by these coordinates since I need to look at this block or something like that so that the player can detect it without interacting with the block. space and the procedure was performed, please help me