search for: possibly_more_complicated_true_expr

...may be accessed with $(foo <args>). A list of these functional variables may be found by typing "show functions" at the Asterisk CLI. So, I guess you could say: SetVAR(var=$(IF a=b?true:false)) or do I have to say: SetVAR(var=$(IF $[a=b]?true:false)) or SetVAR(var=$(IF $[a=b]?$[possibly_more_complicated_true_expr]:$[possibly_more_complicated_false_expr])) [ between the two sets above, the second "feels" more realistic than the first, as the actual evaluation of a=b most likely will have be done by the expression parser... if not, the expression parser will no longer be necessary] vs: SetVAR(var...