Outlook App and exchange RoutingAgentFactory some issue

Question

hi , all:
I developed a outlook Addin,now I hope the migration to Outlook App ，I use Outlook.UserProperty  In Addin, But in Outlook App , I use Office.context.mailbox.item.loadCustomPropertiesAsync ，then send mail later , the
mail don't get the customproperties value.  
if i need the CustomProperties in App , exchange routingAgentFactory how to get the value . 
thanks all.
Anything is Possible！

Answer 1

Hello Harvey,
What code do you use in the callback? Do you call the saveAsync method after adding a user property?
// The initialize function is required for all apps.
Office.initialize = function () {
// Checks for the DOM to load using the jQuery ready function.
$(document).ready(function () {
// After the DOM is loaded, app-specific code can run.
var item = Office.context.mailbox.item;
item.loadCustomPropertiesAsync(customPropsCallback);
function customPropsCallback(asyncResult) {
var customProps = asyncResult.value;
var myProp = customProps.get("myProp");
customProps.set("otherProp", "value");
customProps.saveAsync(saveCallback);
function saveCallback(asyncResult) {
Also take a look at the similar forum
thread which states the following:
These
app-specific, item-specific custom properties are represented in the JavaScript API for Office as CustomProperties,
and can be accessed by using only the CustomProperties object.
These properties are different from the custom, MAPI-based, UserProperties in
the Outlook object model, and extended properties in Exchange Web Services (EWS). You cannot access CustomProperties by
using the Outlook object model or EWS.