Go extend the utMutator to YourModifiedSword then in that use the function and you will have amutator that alters the swords attackpower.
function bool CheckReplacement(Actor Other)
{
local Sword theSword;
if ( Sword(Other) != none )
{ theSword = SwordCOLOR=#000000;[/COLOR]
theSword.attackpower = 10
}
}
defaultproperties
{
GroupNames[0]=“MODIFIED SWORD”
}