more work on variables.

Global.h

@@ -18,10 +18,13 @@ namespace  jet {
       bool sessionExists(coreutils::MString sessionId);
       void addSession(coreutils::MString sessionId, __mysql *mysql);
       void removeSession(coreutils::MString sessionId);
-      void getVariable(ZString variable);
+      coreutils::ZString getVariable(coreutils::ZString &variable);
       
       std::map<coreutils::MString, coreutils::MString> variables;
       std::map<coreutils::MString, __mysql *> sessions;
+
+    private:
+      coreutils::MString renderVariableName(coreutils::ZString &variable);
       
    };