I use FoxyCart by building a cart on my site and pushing the user straight to the FoxyCart Checkout Page. I add a few custom session variables that I then access through the datafeed to complete the order on my app. This works well.
What I can't seem to figure out is how to also print/render these custom variables on my Checkout Page, Receipt Page, and Receipt Email so that the customer can use this information for future reference.
For instance, I have this field imbedded in my form that points to an order on my app:
<input name="h:order_id" type="hidden" value="19">
How can I add this same custom data to my Checkout Page, Receipt Page, and Receipt Email templates so the user can see something like
which I'd guess would be placed in the template like
ORDER ID: #^^order_id^^
Is this even possible?