Add custom attribute 'condition' to schema rich snippets for products in magento store

Hi, I have a website running on Magento 1.8.1 using the Ultimo theme which has rich snippets built in but it doesn't include the OfferItemCondition attribute. We have a mixture of used, refurbished and new items and I need it to work something like the following: <meta itemprop="itemCondition" itemtype="[login to view URL]" content=" if ("{condition}" == "Renew") return "RefurbishedCondition"; if ("{condition}" == "Refurb") return "RefurbishedCondition"; if ("{condition}" == "Used") return "UsedCondition"; if ("{condition}" == "As New") return "UsedCondition"; if ("{condition}" == "New") return "NewCondition";" />" The custom attribute "condition" is already set up I just need the code that will pull in the data from this attribute and add it within the <div itemprop="offers" itemscope="" itemtype="[login to view URL]"> Div in the existing schema code. I've uploaded the relevant files but please ask if you have any other question or need more information. Thanks