The inputListOfValues is a text field that also supports launching a dialog to assist users in entering a value. The dialog to use is specified via the "action" attribute, which should use the "dialog:*" syntax. The inputListOfValues will automatically be populated using the return value of the dialog; see the document on Processes and Dialogs for more information about writing dialogs. (If the user's device does not support secondary windows, the "dialog" will be shown in the same window.)