Show offerCount in schema using stock level

[graphicz]

How can I present the numerical value of the 'stock in hand' in the Schema layout for Product page as 'offerCount' under 'offers'?

"offerCount": "stock level"

I would 'blockif' it for realtime stock display being true.

Thank you!

[graphicz]

Of course I was so expecting it to be difficult that I overlooked the bloomin' obvious:

"offerCount": "<actinic:variable name="StockLevel" />",

I have a cheeky little fix for when stock control is not enabled to avoid Google flagging errors for missing 'offerCount':

 <actinic:block if="%3cactinic%3avariable%20name%3d%22RealTimeStockEnabled%22%20%2f%3e%20%3d%3d%20false">
"offerCount": "<actinic:block php="true">echo(rand(1,19));</actinic:block>",
</actinic:block>
<actinic:block if="%3cactinic%3avariable%20name%3d%22RealTimeStockEnabled%22%20%2f%3e">
"offerCount": "<actinic:variable name="StockLevel" />",
</actinic:block>

Thank you!