Help in rotating prim

[mllop1488304030]

Hey I need help in this, if someone know please help:    I have a cilinder prim (looking a coin) , I make it rotate during 2 sec in random ways and I want when it stop get facing same side that before rotating and facing UP. I did get this using llSetRot(llGetRot()*rot_xyzq) function, but this only work in the place where I am building, when I change of region or also in same region but with different height (skybox for example) it get facing other sides. I need always get facing up. Anyone knows about?, thank you in advance

[Rolig Loon]

Up is fairly easy.
      

llSetLocalRot( llGetLocalRot() * llRotBetween( <0.0, 0.0,1.0> *llGetLocalRot(), <0.0, 0.0,1.0> ) );