size only represents the indexes that have their initial value set to w/e you pick.
and according to what i tried it seems that size 4 means 0-4.
however if you leave the default value untouched then you can just set it to 0...
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.