How do i recognize the position of a box ?

I'm having problem with detection.

I want to make a block changed animation or even spawn another object when close to another one.

But with my code, the green block becomes yellow (change animation) when close to the " fire " brown block. But i need to change the animation of my block when he is not close to the fire block.

Please help !

ibb.co/3cJ0DVM

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