Status Bar Problem

I followed the ue4 tutorial to do the hud of my game
https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gZalvQWYs8sc7RP_-8eSr3i/

So I noticed a problem, which I do not know if it is the tutorial or my mistake
I’ll try to post the video.
[video]https://youtu.be/WjHyAF6Blmk[/video]

So how you can see my stamina has no limit
My jump action cost half of the stamina, if i jump 3 times instead of my stamina being set to 0, its set to -50
Banana recover half of the stamina, if I eat a banana when the stamina is already full it will add 50 more stamina, instead of being still with 100 I will get 150 stamina
It does not end at 0 or 100
What can I do to set limits?

Well is track a state. By bool. If I get what your saying.

Lets first say we want to see stamina change value but it’s not 0-100. Like your character might start that way but gather items raising the stamina to 300.

You’ll need a variable for current stamina and max stamina.

Then to update the bar you would divide current by max do it normalizes to a 0-1 ratio.

In the event of infinite you start the return instead of calculating to always return 1 because the branch you’d be using