i am making a parkour game but Im new in Ureal can some one plssssssss help me out ?
A Backflip/Frontflip seems more like it would be geared towards an Animation type audience.
Try asking in the Animation sub forum in greater detail the problem that your having as they might be more able to help you.
https://forums.unrealengine.com/forumdisplay.php?66-Animation