stop-resume timer - return flag

hi , i was making ctf-hq mod with half time system(team switching) , but i wanted to make it without maprestart. is there a way to stop and resume timer with a quick code ? and how should i call returnflag() function in half time , bcs players can drop flag in team switching.

PHP Code:

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returnFlag()
{
    self notify("end_autoreturn");

     self.origin = self.home_origin;
     self.flagmodel.origin = self.home_origin;
     self.flagmodel.angles = self.home_angles;
    self.flagmodel show();
    self.atbase = true;

    objective_position(self.objective, self.origin);
    objective_team(self.objective, "none");

    self createFlagWaypoint();
    self deleteFlagMissingWaypoint();
} 


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You can destroy, and create new? No?

return flag problem is solved.
yea i know that , just asked is there a way to stop and resume ^^ thx