How to add particles to the end of a progress bar using UMG?

Hi, I’ve been using UMG lately and there is something I’m uncertain about, how can I add particles to the end of a progress bar?, you know some games add that effect and it looks really nice, games like Diablo 3 and Hearthstone do it IIRC. I’m sure others do too.

Any ideas how can it be done using UMG?.