无法在JQuery Ajax返回时刷新reCaptcha

I'm having a devil of a time trying to get Ajax to automatically refresh on a JQuery AJAX callback. I have a comment box with the messages being refreshed posted immediately upon validation of reCaptcha and it would be nice if the reCaptcha could refresh automatically in case someone wants to add another comment immediately afterward. Here's my return function:I'm having a devil of a time trying to get Ajax