Step 8: Set Custom Conversion Variables
The s.purchaseID property that you added in the last section is used to avoid duplicated orders in SiteCatalyst. However, since it is not a conversion variable (eVar) that is associated with an event, you cannot run reports against it.
In this JJ. Esquire demo application, you will add the order number value to an eVar associated with the pre-defined purchase event. Remember that SiteCatalyst provides 75 custom conversion variables that are named eVar1 - eVar75. Conversion variables persist until they expire based on the values you set in the SiteCatalyst UI.
For more information about setting eVar expiration, see the Administration Console User Manual.
//set in purchase.html s.eVar1=orderNumber