Single textbox submit

I am a newbie and trying out adalo, its pretty good and I am trying to do a practice application like twitter. I am trying to see a tweet and have a textbox below it saying add your reply. Its an independent textbox not a form component, like so -

You see that it has -
The first section - topic by a user (coming from the topic database)
Second - replies to these topics ( coming from answers, related to a question)
Third - where the logged-in user can post his reply and it should auto refresh the feed after the logged-in user submits his reply.

The problem I am facing is that when I click submit (send icon button) I am not able to get the textbox value (add a reply) and update it to the answers.

How to pick the value of the textbox and update the above answers section.

Thanks in advance!

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