Call url from text helper

I’m trying to use a text helper to send TTS messages to my family on tablets running fully kiosk browser.

i can just load a url of http://ipoftablet/?cmd=textToSpeech&text=testing&password=password in my browser and the tablet will speak “testing”

i put a text helper on a dashboard page and i want to be able to click a button that will pull the text from the helper and stick it into a url call. That way i can type in “come down for dinner”, push the kid one button and have it play on the tablet mounted in his room… ditto with another button for the other kid… or a third for in the family room etc. I’m not sure how to make an automation or a script that will make the request to the tablet though. Any ideas?