How to make every custom block independent?

Hi guys!
I am new to modding and trying to do End Anchor thing, and I have some problems with making every placed anchor work.
I want to make so every one of them works independently.
Right now I have that problem that only the last one placed is working, and others when clicked just trigger the last placed anchor.
For example: If I place 2 anchors in overworld and click the first one placed the last placed will explode, and if I click again there will be explosion on that place again.
Can you help me/give ideas?
Image of code:
https://imgur.com/HFAhUyp

(ignore blank variables, they contained cords but I deleted them)