private bool SetValue(object currentValue, out object newValue) { if (currentValue != null) { newValue = null; return(false); } EnvDTE.DTE dte = this.GetService <EnvDTE.DTE>(true); Project currentProject = Helpers.GetSelectedProject(dte); //string projectId = currentProject. newValue = Helpers2.GetProjectGuid(currentProject).ToString(); return(true); }