Using itemtype img tag and meta tag with {tag_largeimage}

Question

Hi everyone
Just getting into using Social Media meta Tags for my online store using bc
Schema.org markup for Google+
Twitter Card data
Open Graph data
and I used this site for reference Must-Have Social Meta Tags for Twitter, Google+, Facebook and More - Moz
Ive added this to my large product page and now ive entered the world of Schema.org markup and itemtype and im having trouble with images.
for my large product page ive turned the meta tags from this...
<meta itemprop="image" content="http://www.example.com/image.jpg">
<meta name="twitter:image" content="http://www.example.com/image.html">
<meta property="og:image" content="http://example.com/image.jpg" />
to this
<meta itemprop="image" content="{tag_largeimage}">
<meta name="twitter:image" content="{tag_largeimage}">
<meta property="og:image" content="{tag_largeimage}" />
but the page doesnt like it and the page reads with 3 /> /> /> at the top of my html page for anyone to see meaning that bc doesnt like the code.
also doesnt like it when i use
<img itemprop="image" {tag_largeimage}" />
turns into this
<img alt="" itemprop="image" />
Image is the only one im having a problem with so far any ideas if I can do anything about it. I dont want to have to manually add a http to every product.
thanks
Dave

Answer 1

the meta tags work now.
the only one i still cant get to work is the
<img itemprop="image" {tag_largeimage}" />
when I change it to _path the html editor saves it as
<img alt="" itemprop="image_path" />
so will have to leave that for now put I can still use alot of the itemprop tags to promote the page better than before.
thanks for the help