According to your code, you're not binding the radiobutton to the property, but hardcoded it to value "G1", and that's why you probably don't see your values in the next table.
Furthermore, the code in your 'select' event handler is way to complex. In addition, you should not set values to a tablecell but to the model instead; if you set it to the tablecell, your model would not know of the updated value.
See this working example of how your rating table should work (I used XMLViews because it is simpler coding and easier to read, but the concepts are the same for JSViews)