code: def pastetext(self, window_name, object_name, position=0):
          
          object_handle = self._get_object_handle(window_name, object_name)
          if not object_handle.AXEnabled:
              raise LdtpServerException(u"Object %s state disabled" % object_name)
          size = object_handle.AXNumberOfCharacters
          if position > size:
              position = size
          if position < 0:
              position = 0
          clipboard = Clipboard.paste()
          data = object_handle.AXValue
          object_handle.AXValue = data[:position] + clipboard + data[position:]
          return 1
docs: paste text from start position to end position
          
          @param window_name: Window name to type in, either full name,
          LDTP's name convention, or a Unix glob.
          @type window_name: string
          @param object_name: Object name to type in, either full name,
          LDTP's name convention, or a Unix glob. 
          @type object_name: string
          @param position: Position to paste the text, default 0
          @type object_name: integer
  
          @return: 1 on success.
          @rtype: integer