[Stamina Blueprint] Problem with Float / Boolean variables

Hello there!

I’m here to ask support. I want to make a Horror video game, using the 3rd Character template.
So here is the blueprint that i make:

http://image.noelshack.com/fichiers/2015/31/1438087114-boolean-floatvariable.png

So i put comments in green where problems are. So like you can see, i can’t put a value in the “Set Stamina Value” because this one is a Boolean Variable and not a Float.
I did a Walking/Running blueprint in this, and when i’ve started the Stamina Blueprint, i added the Boolean “Can Run / Is Running”, and added them here like:

http://image.noelshack.com/fichiers/2015/31/1438087380-booleansprint.png

But now, when i’m playing: I can’t run anymore! Is that because the Stamina Value isn’t affected, or because i make a mistake?

Can someone resolve this please? This would be fantastic!
Have a g’day !

** Resolved by myself, sorry!