Is there a way to make a boss heathbar?

[twofoursixeight]

Try these solution(s):

How to make a boss hp bar on top of screen

You can’t track player/sentry health but you can use health-fractions with multiple sentries. Sentry Knocked Out > Send Notification Title: Sentry Knocked Out! Content: Boss Health #/# [insert health-fraction] Sentry Knocked Out > Activate Sentry And repeat

How to make a boss hp bar on top of screen

You can use barriers to make the bar, and when sentry takes so much damage the barriers 1 by 1 go invisable so it looks like its shrinking.