Customwebview html button to send data with setWebViewString

MIT App Inventor Help
1

I have a button on a web page, and I want to press that button to execute a function from the inventor of the app but instead of doing it with a native button, do it with a button from my website. What I need are the blocks that interpret the event of having pressed the HTML button.

image

Example of my current block

Imgur

I would also like to see how I can send the parameters for the coordinates through the HTML button.

2

Where is your webviewstringChanged block ?

3

I was able to fix it, thanks but I'm interested in knowing something else and instead of creating another topic, I'd rather take advantage of this, do you know where I can get the asyncproc extension for mit app? do you have the link?

4

and search for async, there are a couple...