I've created a new ZClass which inherits from Object manager. I want all instances of the class to have two File variables (should be unique). I wasn't sure how to handle this so I put two empty File instance in the methods folder of the ZClass. The user has to supply the files when he/she instanciates the object. I simply call the manage_upload method on the Files I put in the method folder. However it seems the File instances are acting more like class variables than instance variables, I'm assuming it's because the methods folder is for class-wide objects, methods, etc. However I don't know where else to put these files or how I can have every instance of the ZClass have two file variables ( I can't add a file to a property sheet, and this would seem like the most likely place to put such a variable declaration). Do I have to subclass something else besides Object Manager? If so, is it possible to change the inheritance of a ZClass withought redefining it (the baseclasses field isn't editable)? thx Chime