Text Field input in HABPanel?

I would like to have a text field which could be used to edit an Item in HABpanel. For the user just to change a simple message. Most UI builders have a text field as one of the most basic components, HABPanel doesn’t?

Am I missing something obvious here?

I actually want it so the user can send a message to a kodi instances running on TV’s in the house. They enter a message and It’s send via the MQTT broker and appears as a notification on the screen. All this works just great, but it’s a hard coded message sent currently via a habpanel switch widget, just because I can’t see the right things for sending a custom message.