What is the main use of this block ,please say




It detects when the “WebViewString” has changed.
I use the WebViewString to detect which row of a table the user has clicked on.

What the documentation says about WebViewString:
“You can use the WebViewer.WebViewString property to communicate between your app and Javascript code running in the Webviewer page. In the app, you get and set WebViewString.”

You can read more about it here: