Disable block before leaving the zone

Hello,

I want to disable a block after using it while the player isn't in a square cube with size 10. I use for this the block update tick but it don't work correctly. Here's my procedure:

OnUpdate Tick

https://ibb.co/GHdYgM5

And When I walk on the block

https://ibb.co/L1L6x2Y

Anybody know how to correct it