& btgetxcodevalue()
 
  Syntax: btgetxcodevalue(<ObjectDB>,<xcodevalue>)
 
  This function returns the value stored in <xcodevalue> on the 
  specified object.
 
  Error Messages:
 
  * If <ObjectDB> is not valid the function returns #-1
  * If <xcodevalue> is not valid the function returns #-1 
 
  Example: 
  Given a map #dbref 62:
 
  > think btgetxcodevalue(#62, mapvis)
  30