foreach naming problems

[Follyx]

Hi, here is the next untraceable mini mistake:

in the attached file middleclick on the partition node;3 primitive groups; ie, mymaterial_01_. looking to the shop than you'll see that the naming convention is mymaterial_01. I choosed primitives as entity and as rule I use:

mymaterial_`padzero(2, ($MYCLASS % 3)+1)`[/CODE]

so where in hell comes the second underscore character in the primitive group convention?

Thanks in advance and

Cheers