Tr toggling to Raw Mode (Ctrl+D) and write the layout/frame by hand. Given how small the box to input the custom unit status frame value is, i wouldnt be surprised if its being impacted by your DPI
Copy and paste it from another unit. That's what I do. Go to a unit with a custom status frame that you like (my personal go-to is "Alarak - Void"), then click on their actor, find "Custom Unit Status Frame" and copy that field onto the "Custom Unit Status Frame" field of the unit you want to change.
With triggers you can mod the damage amounts taken and probably use unit custom values instead. Could even link it up to a custom UI layout to show the different stat bars.
I'm not sure if this is what you want... but the Auir Immortal has an ability where it can gain a barrier that absorbes 100 damage. It's like a shield but isn't one, so it doesn't affect existing shields.
0.95067264573991