EDIT :fixed on august 10 this was a short one :-)
I\'ve learned recently to get the value of a tag using e.parameter.widgetName_tag
and it works nicely on
Same issue here...
It seems like there is no access to 'tag' value of the elements that has not 'name' parameter available. In my case this was 'label' element...
The only solution which I was able to find was to create hidden TextBoxes to use their tags in the same way that I previously used with label elements.
Probably Google has made some changes in their scripts engine.