dispatchEvent problem

hi iam trying to move forward and learn as3 i am converting complex project i worked on last year using AS2 , now i have problem in dispatchEvent command

i have class extends MovieClip that need to fire Event to sub sub childs
i can send from the child to the parent using


dispatchEvent(new Event("someEvent",true))

but i am still unable to send from parent to childs

please help me in this .:crying: