java script variable access in intraweb

[MrSpock]

Hi, you can pass any value from html/js to delphi using new callback functions.
http://docs.atozed.com/docs.dll/developm...015.1.html

The file is written for those who already know a lot about javascript and callback. So not for me who knows nothing about that.

Will the below work?

My strategy would be something like this:
I define an IWLabel on the form, let's suppose its name is IWLabel1.
I make it visible:=false. and form.renderInvisible:=true
I add code to my javascript function such that it changes the value (label's
tag in this case) of the component  something like:
document.getElementById("IWLABEL1").tag='34';

Now I click a button and hope to get the changed tag value in intraweb back-end.