Speed boost blueprint will not return player to original speed after specified time is up

Hi, I am able to get my player speed boost to 1200 working but not returning to his original speed of 600 after a specified time of 5 seconds. any help would be appreciated, have tried a lot of variations with no luck

You set it back to 600 when the timeline finishes. There is an execution pin for that called “Finished”. In your timeline make it 5 seconds long or longer.