Change boss bar progress by
Fill or drain a boss bar by an amount from -1 to 1, stopping at empty and at full.
A Minecraft element (a step) in Scoreboards & teams. Needs the Basic plan or higher to go live; building and testing are free.
Example
When a player hits the boss → Change boss bar progress by: boss, -0.05.
Also called
progress add, drain bar, fill bar by, bar step
Works as a data pack?
No. This one needs the Elementium plugin on a Paper server.
What you give it
- Bar
- Change by
What it gives back
- Progress