How do I save a particular animation frame

i have a sprite with 6 frames

i copied that sprite 6 times

.

i have done some lock-unlock system

.

i have unlocked 3rd frame

now how could i save this frame on local storage

i have try set animation frame to localstorage.itemvalue

but it saves same frame for for all sprites

pls do help

https://www.dropbox.com/s/5djq5h2m1vo48jf/test%20BG%20change1.capx?dl=0

Problem is Now Solved