[dev] create own variables in Config.pm

Hi all, i want use a selfcreated variable e.g. Self->{myownvariable}=something and use this in any .dtl e.g. AgentZoomStatus.dtl I tried to access the variable with $Config{"myownvariable"} with no success. can anyone give me a reason? whats the right way to use own variablenames? Claus