How to use text input as a signal?

Hi ya'll,

Very new to C3, and trying to figure out how to have my players input text in a text field (using the text input tool), and using that as a trigger for a dialogue box. I think the issue is I can't figure out how to let my players actually 'send' their typed text to the game- I can type in the field, but there's no feedback. Have already set up a string that would let dialogue play on a signal- but the signal isn't actually triggering!

Here's a link to my file if it helps. Would appreciate any guidance. Thank you!

https://drive.google.com/file/d/1JINJYeecgS4-uEcm73VYOA29GdaAb3ns/view?usp=drive_link

This is how I do a kind of typing game:

dropbox.com/scl/fi/0tysjlf5b94u42isb8hmd/typingGame.capx

If I understand you correctly, you should be able to use the “On text changed” trigger:

construct.net/en/make-games/manuals/construct-3/plugin-reference/text-input