1. A Diameter network device comprising: a storage configured to store a plurality of global variables corresponding to the Diameter network device's system properties and configuration, wherein each global variable respectively replaces a literal for a Diameter Routing Agent and an action to set each global variable value is only available in an initialization rule set, wherein the initialization rule set is invoked when at least one of: changes are detected in the Diameter network device, installation of a new rule system version on the Diameter network device is detected, a change to the Diameter network device's system properties has been detected, or the Diameter network device is newly added to a network; a memory; and a processor configured to establish an object within the memory representative of a respective global variable, access fields of the global variable including a property of the network device which was modified via utilizing information in the object, and access, via utilizing information in the object, an attribute for the global variable.