stick ojects to surface of a bunch of simulated rigid body cubes

[avak]

Hello,

I have some cubes simulated falling down on the ground, I cached them and by for each loop isolating each cube, extracting each centered point of each cube's surface and copy a font node to these points 

all seems good on frame 1 but the font is spining around normal of center points , "the normal is fine", so do i need to define up vector aswell to stick these fonts during all frames ? 

if yes how to make up vector and if no need up vector what is the proper way for these situations ?

 

thanks