i've looked in the japi folder of the jassnewgenpack
i've found that, on the custom common.j

JASS:
native ItoR takes integer i returns real
native RtoI takes real r returns integer
So how exactly the I2R and R2I are bugged ?
Because i need to use R2I like that :

JASS:
set this.yB=(R2I(this.yB*1000)/1000)
or can i use Itor on a multiplayer custom game ?
I think not, but i ask for be sure