So, I have figured out a workaround to this situation.
Just do this:

when I receive [Create clones v]
repeat (5)
change [Clones v] by [1]
end

Then do this with when I start as a clone:

when I start as a clone
Physics (Clones)::custom

Then

define Physics (Clone ID)
if <(Clone ID) = [3]> then
...::Grey
end

I think i found a method using different local variables and a for all sprites variable that increases and syncs with the separate variables when each clone is created.
There are if blocks that each contain one ID(clone’s set variable) and commands for the specific clone.

Not only is this a dupe, but using variables and lists, you don't need this feature at all. I'd suggest you close this topic and post your concerns on the original linked at the top of this page.

I see, thanks for telling me, i didn’t know there was already a method