Shadowed Unit Frame Custom Text Tag

[Druidicbeast]

I've recently switched my unit frames to SUF. I was looking through the list of text tags that comes with it but it was missing 1 or 2 I was hoping to get some help on making. I want to be able to show percentage HP but have it hide when HP is full/max. I noticed that it seems you can add tags as conditionals as well so I was wondering if I could maybe have a tag that just hides X on full HP or MP. That way I could use the tags for things other than percent health. The second was having a text show on mouseover. Thanks for any help, it would be greatly appreciated!