AFTER EFFECTS expressions to parent the position of CC Particle World to a null's global position even if the null is parented to another null. name the null to follow…… "child" put the expressions below into the CC Particle World positions for x, y and z.. myVar = this_comp.layer("child");myArray = myVar.to_world(myVar.anchor_point);x=myArray[0];(x-(thisComp.width/2))/thisComp.width; myVar = this_comp.layer("child");myArray = myVar.to_world(myVar.anchor_point);y=myArray[1];(y-(thisComp.height/2))/thisComp.width; myVar = this_comp.layer("child");myArray = myVar.to_world(myVar.anchor_point);z=myArray[2];(z/thisComp.width);