How to Display Show Attachment in Info Window - arcgis

Question

I am using below code to display identifier popup.if I click on particular point it will display all the information about that point in info window(popup).but even if I specify show attachments true it will not display the attachments.In Map server I have an image for points.so I need to display info window as well as the image.
map.on("load", mapReady);
var parcelsURL = "MY MAP SERVER";
//map.addLayer(new ArcGISDynamicMapServiceLayer(parcelsURL,
// { opacity: 20 }));
function mapReady() {
map.on("click", executeIdentifyTask);
//create identify tasks and setup parameters
identifyTask = new IdentifyTask(parcelsURL);
identifyParams = new IdentifyParameters();
identifyParams.tolerance = 3;
identifyParams.returnGeometry = true;
identifyParams.layerIds = [0];
identifyParams.layerOption = IdentifyParameters.LAYER_OPTION_ALL;
identifyParams.width = map.width;
identifyParams.height = map.height;
}
function executeIdentifyTask(event) {
identifyParams.geometry = event.mapPoint;
identifyParams.mapExtent = map.extent;
var deferred = identifyTask
.execute(identifyParams)
.addCallback(function (response) {
// response is an array of identify result objects
// Let's return an array of features.
return arrayUtils.map(response, function (result) {
var feature = result.feature;
var layerName = result.layerName;
feature.attributes.layerName = layerName;
if (layerName === 'GridPoint') {
var popupTemplate = new PopupTemplate({
title: "",
fieldInfos: [
{
fieldName: "XX",
visible: true,
label: "XX"
},
{
fieldName: "YY",
visible: true,
label: "YY"
}
],
showAttachments: true
});
//var taxParcelTemplate = new InfoTemplate("",
// "XX: ${XX} <br/> YY: ${YY} <br/> Sample Point Number: ${Sample Point Number} <br/> Point Collected: ${Point Collected} <br/> Major Rabi Crops: ${ Major Rabi Crops} <br/> Major Summer Crop: ${Major Summer Crop} <br/> Soil Type: ${Soil Type} <br/> Major Kharif Crops: ${Major Kharif Crops}");
feature.setInfoTemplate(popupTemplate);
}
//else if (layerName === 'Grid') {
// console.log(feature.attributes.objectid);
// var buildingFootprintTemplate = new InfoTemplate("",
// "OBJECTID: ${OBJECTID}");
// feature.setInfoTemplate(buildingFootprintTemplate);
//}
return feature;
});
});
map.infoWindow.setFeatures([deferred]);
map.infoWindow.show(event.mapPoint);
}
});
someone please help me to display attachments(image) in info window.