call properti chang detect stereotyp ad remov remov fig node remov listen stereotyp stereotyp detect add listen todo bob sai opinion shouldn do fig stereotyp listen chang owner fig stereotyp compart listen add remov stereotyp owner class need pass event fig node awt thread chang result chang size requir redraw note run model mdr thread param event uml chang event caus chang stereotyp chang uml chang event event object owner owner owner event old valu remov element listen event old valu event valu add element listen event valu invalid element except defin log lp log granular type statement log debug stereotyp chang method access delet element endif 