Modding AI Defines

Hi Guys,

need some help...

I want to change in the xml defines the action of the Barbarians...

<Update>
<Where Name="AI_TACTICAL_BARBARIAN_PRIORITY_DAMAGE_CITY"/>
<Set Value="11"/>
</Update>

But how is the command for healing? Barbarians (City states and CIV's too) are stupid enough to run with a lot of damaged units around without healing them...
And what meant the command "TO_SAFETY"?

And I saw Numbers from -1 to 15 originally - is 20 possible and makes this some difference?

And what means a 3 for "BARBARIAN_CAMP_ODDS_OF_NEW_CAMP_SPAWNING"?
More spawning is 4 or 2?

Thank's a lot
Gwydion