How Do I Access A Player's Speed & Add It Back In After A Certain Action?

So I’ve Done This Tutorial Unreal Engine 4 - Tracer's Dash - YouTube And After I Was Done With It, I’ve Noticed Something About It, There Is This Momentarily lose all my velocity and speed and the dash losses all of its dynamic-ness and smoothness so I want to add my velocity before I’ve dashed and add it after I dash in a way that is resumes my motion (even with my dash has stop all movement after a certain timer expires).