fixed a bug on coursesAssigned not cleared when there is a new pop-up
fixed a bug on coursesAssigned not cleared when there is a new pop-up

cocolocomoco21/ULCRS,cocolocomoco21/ULCRS,cocolocomoco21/ULCRS,cocolocomoco21/ULCRS,cocolocomoco21/ULCRS,cocolocomoco21/ULCRS