Replace toughness with a derived stat for damage purposes

[Deryl]

Hello,
I have created a derived Stat (Mental Toughness) for our Seven Worlds setting. Now I would like my Psionic Powers to do damage vs. the derived Stat (Mental Toughness) rather than the standard toughness value. I have the impression it could be done with the "registerDamageType" functionality in lua. But I can't figure it out. I do have Powers which use the Type "Psionics". Can anybody point me in the right direction.

Thanks a lot
Deryl

[UrsaTeddy]

IIRC there is the extension for Realms of Cthulhu by Ikael shows how to do this.

Link Here (https://www.fantasygrounds.com/forums/showthread.php?38569-Ikael-s-miscellaneous-extensions&p=340308&viewfull=1#post340308)