"Heal Life" not working??? :(

"Heal Life" not working???

Hi, I'm playing Fable - The lost chapters on my computer.
I have gotten past the first part where you defeat jack of blades, and have now gotten just past where you get the fire heart.

I just decided I'd use a bunch of "will" experience points to get the "Heal Life" spell.
I upgraded the spell to its maxed out level.

I was just running along in a quest, and thought "hey here's a good time to use the "heal life" spell, but when I try to use it, it has a cross through it's icon at the bottom right, and makes some noise as if I can't use it...
I don't get why its not working!...

I have tried making it so I have one physical spell (heal life), and one surround spell, to see if it meant that I cant use two physical spells at in the same thing at once, but it didn't help, so its got to be something else... But what??

What could be making it so "Heal life" is not working when I try to use it?

Re: "Heal Life" not working???

I think you have to be a good character to use the spell, if I remember correctly.