code: def add_var_condor_cmd(self, command, value):
      
      macro = self.__bad_macro_chars.sub( r'', command )
      self.__macros['macro' + macro] = value
      self.__job.add_var_condor_cmd(command)
docs: Add a variable (macro) condor command for this node. If the command
      specified does not exist in the CondorJob, it is added so the submit file
      will be correct.
      PLEASE NOTE: AS with other add_var commands, the variable must be set for
      all nodes that use the CondorJob instance.
      @param command: command name
      @param value: Value of the command for this node in the DAG/DAX.