XML - how to set how likely an AI will capitulate?

[ViterboKnight]

As the title says, I'd like to know if the likelihood for an AI to capitulate is set by any XML attribute for that leader. And which one, of course!!

 

[Afforess]

In the CIV4Leaderheadinfos.xml

# VassalRefuseAttitudeThreshold - This relation has to be exceeded before the leader will voluntarily offer to become a vassal. GS: ATTITUDE_ANNOYED - ATTITUDE_PLEASED

# iVassalPowerModifier - The higher the more you'll have to beat 'em up before they'll Captiulate. GS: -20 - 50

http://forums.civfanatics.com/showthread.php?t=274966