Deploy a basic web form

Deploy a web form that calculates the distance between two locations:

Add initial data to the form

Initialize the From field with the name of the nearest city; replace the From field’s "Location" type with an Association that specifies both the type ("Interpreter" key) and the initial value ("Input" key). Use RuleDelayed () with "Input" so that the value is calculated when the form is used rather than when the form is deployed: