Tips for Using Global Variables

All sub attributes of IS_Attr elements are global. These variables persist while the client is running. It is a good practice to clear global data at the beginning of each call. If more than one element is given the same IS_ATTR_* name, unpredictable results will occur.

// create some attributes
IS_Attr_CallData.foo = "Hello";
IS_Attr_CallData.bar = "World";