Hi- we have
in our UDO on the receipt page but we're having a devil of a time figuring out how to send that data to Omniture in the product string.
You can use mapping to accomplish this.
1)Go to the mappings section of the tag.
2)Select order_tax from the drop down of data sources
3)In the mapping toolbox select the "Merchandising evars" or the "Product Level Events" tab depending on how you want this in the product string.
4) Select the eVar or the event you want this passed into.
Note: You've got to be using H25 or above to have this feature of the SiteCatalyst Tag.