Find UI elements in unity c# : I'm facing an issue regarding UI elements in unity.
I am making a leader board as in Piano tiles for all Facebook friends score.
I tried instantiating UI elements at run time but cant implement   
I want to assign random values to UI Text and UI images in for loop
I made and array of panels and and activate and deactivate them according to my requirement
I get the parent but i don't know how to find its children (these child are UI elements) and assign a value 

Please Help as i have to deliver my projects asap 