I'm tweaking an XML template for my phones, and wanted to know if there's a way to register a global variable in the <headers/> section? Basically, I have some repetitive declarations in my XML to which I want to consolidate under a single variable, and then use that variable placeholder throughout my configuration. Like this, this makes adjustments a lot easier on the long-run. Ideas welcomed. ps: I noticed that I could possibly also use the %%param::<varName>%% from the Custom Parameters table of 3CX, but I want to avoid spreading-out my declarations everywhere.