& btsetcharvalue()2

  Error Messages:
 
  * If <ObjectDB> is not valid the function will return #-1 INVALID 
    TARGET
  * If <skill/attribute> is an attribute and <mode> does not equal 0 
    the function will return #-1 ONLY SKILLS CAN HAVE FLAG
  * If <skill/attribute is not valie the function will return #-1 
    INVALID VALUE 
 
  Example:
 
  Given a player named Labrat (#dbref 1234):
 
  > think btsetcharvalue(#1234, medtech, 2, 0)
  Labrat's Medtech set to 2
  > think btsetcharvalue(#1234, medtech, 2, 1)
  Labrat's Medtech set to 5
  > think btsetcharvalue(#1234, medtech, 2, 2)
  Labrat gained 2 more Medtech XP.