var options = {
                name: "dataPageName",
                parameters: [{name: "param1", value: "Page1.prop1", isProperty: true},  {name: "param2", value: 123, isProperty: false}],
                callback: callbackFunc,
                event: eventObject  
            };

            function callbackFunc(resultJSON){
                console.log(resultJSON)
            }

           pega.api.ui.actions.getDataPage(options);