Cant find linkbutton in listview on page postback

Hi! This is my code to find the linkbutton but it's returning null

LinkButton lbViewMovie = (LinkButton)this.Accordion1.FindControl("lvVideoList").NamingContainer.FindControl("lbPlayVideo");

I need this linkbutton id in the postback=false so I can add triggers to the updatepanel dynamically. Thanks!
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