Score Manager Message has the plus sign in score notification even when the score is set and not added

I there a way to remove it?

Score is set for each player based on their race time. We only need to show the player’s best score while race time is always the latest race time. When player completes the race, the +Score! notification is displayed. It is a bit confusing because the value will not be added to their current score but rather set as their highest score.