Disable one field on limit

Hello, I have a form with the field. I would like to adjust that it can be selected only 20 times. If the 20th person chooses it and submit the form this fiels should be disappeared. Is it possible?

form: https://form.jotform.com/70212872242953

field: "Vidéki vagyok, és szeretnék pályázni az ingyen szállásra."

We have a few different widgets that will allow you to set up quantity limits for your options.  Here are a few of those widgets:

http://widgets.jotform.com/widget/inventory 

http://widgets.jotform.com/widget/quantity_gift_registry 

http://widgets.jotform.com/widget/gift_registry

http://widgets.jotform.com/widget/appointment_slots

Depending on how you'd like to set up your options, one may be better suited than another.

Oh yeah, thank you. I used gift registry before so it is perfect.