How do I have a loop that summons entities, and store their UUID in a different variable each time?

[BlazeKnight]

I tried to do "zombie %var(zcount)" and increment the variable "zcount" after summoning the entity each time, but this didnt work, how else could I summon entities with a their UUID stored in a different variable each time?

And by the way, yes I didnt forget to set this stat to the UUID

 

[ARandomEnderman]

Use a list and append the UUID to the list when the zombie spawns
You can use get "Pop List Value" or "Get List Value" to get the UUID depending on what scenario you're in

 

[BlazeKnight]

Use a list and append the UUID to the list when the zombie spawns
You can use get "Pop List Value" or "Get List Value" to get the UUID depending on what scenario you're in

Thank you very much!