I mentioned this on the discord but i think it's better for tracking to have it located here. Placeholder %parkour_personal_best_{course}% has not been implemented with the placeholder update. This placeholder is used to gather a players personal best time on a course. If this is implemented could it be implemented with a personal best death placeholder aswell.

in new placeholder format:

%parkour_player_personal_best_time_(course)%
%parkour_player_personal_best_deaths_(course)%

This has already been implemented in commit 1f84545