Apologies for the otherwise trivial error, but when the ‘Set Percent’ requires a target, it doesn’t seem to work; that and the ‘Set brush from Texture’. The nodes that are to go into the ‘Target’ of these always requires it’s own individual target; so on and forth. Maybe a difference in engine - I’m using 4.27. That or it could very well be something with the method of the health bar itself. I don’t understand UI/X design at all, and so something seemingly basic (If Health =>170, set Z position of ‘Image’ to 2 - but it’s not that simple unfortunately) is much more convoluted.
