using Facebook Group Page 'Like' in canvas Tab -

Facebook has the ability to link buttons similar to the Facebook button recently.

I had a simple canvas application and successfully added a share button using FBML, so far, I need to include the 'Like' button (I know that as soon as opening a button is weird , When there is a similar button at the top of the page, but what the customer wants!). As mentioned in the post, I have to implement the graph which I have to implement. I have tested it directly on the canvas URL which works fine, it does not work when loaded on tabs - I get the following error:

FBML error (line 28): invalid tag "body "Bottom" FB: Tab-status

... This is because you can only use FBML (where body tags are not allowed) and there is no graph API within a canvas tab? What can I do at present?

Thanks

I had this problem with Ruby on Rail application and it was down for forgery security on post requests Once I came to know that skip_before_filter had worked. I have read other such problems and have been reduced to getting server problems in accepting post requests.