Disease Variant Channeling

[Morris Chan]

says

Heal: Creatures heal a number of points of ability damage to one ability score (your choice) equal to your channel bonus.

Harm: Creatures are sickened until the end of your next turn, plus a number of rounds equal to your channel penality.....

my question is what is channel bonus or channel penality?

the amount i heal by or amount of damage i did with channel?

[Cheapy]

It's defined on the Variant Channeling page.