Parameter <str> has invalid data type:  <num> declared, <num>
  passed.

  Explanation:  The parameter was passed to a module language
  procedure with a different data type than it was declared in the
  procedure.  The codes for the data type as declared and as
  passed are specified in the message.  The codes are from the
  DSC$B_DTYPE from the descriptor.  See the "Introduction to VMS
  System Routines" manual for these codes.

  User Action:  Make the parameter agree in the module and the
  host language.