Webmaster tools structured data error of missing required file "updated"

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  maggieau124 · Member · Mar 1, 2014 at 3:56 pm

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  I connected my wordpress: http://aroundmaggie.wordpress.com/ to google webmaster tools. However I found that the structured data page of webmaster tools showing Missing required field “updated”. I searched online that people giving solutions to change the code in single.php but then I am not able to find anywhere to edit the single.php file.

  Since my blog is subscribed from wordpress.com and is not owned by me, so I cannot edit the php file.

  Would someone please let me know how to solve the structured data error in webmaster tools page?
  Thanks.

  The blog I need help with is: (visible only to logged in users)