[Solved] How to pick the sprites around a sprite

I have a detailed isometric layout. When my game token is dropped on a tile, the 3 tiles in front of it, closer to you, need to be picked so the z-index of the token can be set correctly to display in front or back of the tiles in front. They might be taller. Follow?

So how can I pick the sprites that are immediately next to, and around the current sprite?

Pick by evaluate?

https://www.scirra.com/manual/124/system-conditions

For searches in the future, this is my function. It's working well on my isometric layout. I'm using the tiles_around array as my function return values. Since we can't return more than one value.

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