This example demonstrates how to use custom values in the 4D Ajax Framework. The custom value data is sent from the web page (frontend) and recieved in the 4D Database (backend). The 4D Database (backend) then performs a query and sends custom values back to the web page (frontend) which then formats the data and displays it on the web page. The example is in the form of a Car Dealership's internal quoting system; it is designed to let the user configure a vehicle with the options they want, and displays the total price on the page.

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