How can I connect google forms/sheets to chatbot?

[tomuskey]

I need my chat bot understand user input and write the value to a particular cell in google forms or google sheets. How can I do it?
p.s. I know there are solutions to convert google forms to 'chat bots' but that is not a solution for me since they can't do anything else

[tiulimg]

I'm using a backend server to send an HTTP POST request and fill a google form automatically, and then an onEdit event on Google AppScript to update the backend google sheet.