[Freeswitch-users] Global Variable Substitution

Hi Everyone. I thought I read somewhere that this was possible, but I can't find it now... I need a way to find-and-replace within a variable. So, for example, I want to take variables that have values like this: 123abc123abc abc123abc123abc ...and do a find/replace of the "abc" with "xyz" so the variables would now return: 123xyz123xyz xyz123xyz123xyz The use case I've run into is that I need to add leg variables to group_call. In my case, group_call can return any number of members, so I figured I would just replace the first "[" with "[variable-I-want-to-set=...". Thanks for the help! ~Brian