Create same sprite with diferent loaded images

Hi all. I have made a File Chooser buton that creates a sprite with the selected file image at a random position. The first sprite is all good, but if I get a new file it creates the second one AND changes the image of the first one. I need them to remain diferent. I did try with family behavior and global variables as the CAPX show. Anyone have an idea to make this work?

CAPX HERE

Need x times empty frames in the animation. (animation speed = zero) Set frame to next frame before loading image (event 2).

Thanks for reply.

I added some empaty frames to the Sprite and tried to do what you told me, the result was the same

Sorry, I'm really tired. Go it working: