Hello, Perhaps I'm doing this wrong, but when I do: EM_EndCap emec = ((EM_EndCap) detect.getComponent("EM_EndCap")); System.out.println( emec.getZInner() ); I get a runtime error. It compiles fine it just won't run. This is in jas3 by the way. I need to know the z value of the inner face of the endcap. -Brandon Drummond