cannot focus on input field

cannot focus on input field

Using accordion, latest jquery + jquery ui

This properly set the input value to 'testval'
("#container_"+id+" input:last").val('testval'); 

But this does nothing:
("#container_"+id+" input:last").focus(); 

Both events are triggered within same function .click()

PS.This is accordion, on click section name I want to focus on last input field within that section