Def text_box_1_pressed_enter(self, **event_args)

This is how I finally solved it. Thanks all for your help.

# on server

@anvil.server.callable
def plus10(n):
    result = int(n) + 10
    return str(result)

anvil.server.wait_forever()

#on client
def text_box_1_pressed_enter(self, **event_args):
    """This method is called when the user presses Enter in this text box"""
  
    result = anvil.server.call('plus10', self.text_box_1.text)
    self.text_box_2.text = result
1 Like