How to Check if the Player is Less than 64 blocks Away from a Block?

So, i have these two procedures but even tho im more than 64 blocks away from a block i can still teleport ( which is not meant )

this is the procedure to set the position : https://imgur.com/a/ZEc9Stp

and this is the procedure to teleport : https://imgur.com/a/vpie4f0

What i want is: if the player is less than 64 blocks away then, teleport