Scratch

I am trying to make a level select screen but use variables to set all the levels icons out at a certain distance apart. I am using the script:

when gf clicked
set [how many levels v] to [10]
add (object [allSprites v]) to [placer v]
delete (1 v) of [placer v]
go to x: (-210) y: (150)
script variables (a) (b) (c) (d)
set (a) to [-180]
set (b) to [150]
set (c) to [1]
set (d) to [0]
repeat until < (d) = [1] >
run ( go to x: (a) y: (b) of (item (c) of [placer v] )
if < < (a) = [210] > and < (b) > [-150] > >
set (a) tp [-210]
set (b) to ((b) - (60))
else
if <(a) = [210] >
stop script
else
set (a) to ((a) + (60))
end
end
if <not < (c) + (how many levels)>>
set (c) to ((c) +(1)
else
set (d) to [1]
end
end

the run doesn't work in scratchblocks but it says run (the script go x a) y b)) of item (c) of [placer v].
When I play this script in stops working and I have identified the problem as the  item (c) of [placer v] block that is put in the second input of the ([x position v] of [sprite 1 v]) Is there anything else that I can do that would work?