Export template as Vsix extension issue

I successfully used this extension but I hava just one (very important) issue.
Setting $safeprojectname$ instead of namespace name works correctly (it's correctly replaced) but I need to set this variable also for build->output path. If i do it variable is not replaced with project name. How can I solve it? I need to make also output dir dynamic, it should be created basing on project name. Can you help me?