Hi,

I have some primitives that have an attribute "class" and I would like to assign an attribute "@unique=1" to each primitives that only have the same value for "class2" for the same value of "class".

--> if there's only the same value for "class2" for all the primitives with the same "class" value then assign to all of this primitives the attribute "unique" with a value of 1 and if there's more than one unique value, give them a value of 0

I tried to promote the "class" attibute to groups but I didn't manage to run the test for each group
Any help/guidance would be super welcome, thank you!

You could do a "for each named primitive" loop using class, and assign @unique=1 when the length of uniquevals(0, 'prim', 'class2') is 1.

you can also use 2 attrib promotes to get min and max of "class2" from prim to prim using "class" as piece attrib

then do prim Wrangle:

Thank you very much, it worked perfectly!