case : i create a sphere then append the miiror SOP, when put $CEX in one of this parameter fields (example : originx), i got error that shows me that this $CEX cannot be calculated in this node.
why is it not recognized?
is there anyway i can see the list of local var that's available within current node?

thx

The help cards for the operators will list which local variables you have access to. In the case of the Mirror SOP there aren't any local variables, so you'll have to use the centroid() expression.

Like: centroid(opinputpath(“.”,0),D_X)