I am trying to pull in the price and inventory stock levels for the product/variant a user selects in real time from an external source. This ERP is capable of web services calls and has a suitable web service in place. I am assuming to call this using an event handler? I have created a new event handler through the Admin function configuration event handler. I have also created a new event.eventname.xml.config. The documentation states I need to insert AppLogic.eventHandler("CustomEventName").CallEvent ("SomeRuntimeParams"); in the page I want to activate it. Unless I am missing something, the page that is displayed is p-productname.aspx, which I thought is generated from the product.xxxxxxxxxx.xml.config. Can anyone help and tell me how I should do this?