http://mugenguild.com/forum/topics/helper-sctrl-169754.0.html
The docs say remappal doesn't work with helpers. I guess you mean with helpers that use the same palettes as its root
I know I took this off topic heh. So it looks like that's only if you use the "remappal" parameter for the Helper state controller. But you can use the RemapPal controller within the Helper, no problem.
Spoiler: Code from a helper in Jailbot, works perfectly fine in 1.0 (click to see content)
I have a bunch of different color pals set up, and this makes it cycle through them.
[State 3303, Set custom glow speed]
type = VarAdd
trigger1 = parent,var(57) = 12 && Time%2 = 0 ;Rainbow glow anim speed
trigger2 = parent,var(57) = 30 && Time%3 = 0 ;USA glow anim speed
var(4) = 1
[State 3303, Set custom glow pal]
type = VarSet
trigger1 = !time
trigger2 = parent,var(57) = 12 && var(4) = 9 ;Rainbow glow anim reset
trigger3 = parent,var(57) = 30 && var(4) = 5 ;USA glow anim reset
var(4) = 1
[State 3300, Custom rainbow glow]
type = RemapPal
trigger1 = parent,var(57) = 12 ;Jailbot PalNo is 12
source = 3303,1
dest = 3333,0+var(4)
[State 3300, Custom USA glow]
type = RemapPal
trigger1 = parent,var(57) = 30 ;Jailbot PalNo is 30
source = 3303,1
dest = 3334,0+var(4)
The glow changes Pals, Jailbot does not
*Edit* To clarify, RemapPal affects the pal used by sprites universally - the controller does not have to be used in the helper's code to affect the pal the helper is using.