Can anyone have an idea about how can I do the rebuild bundle using the Native Builders build command step in Mendix in Details? 3.6 Sending a Push Notification to a Single Device To see your changes from Studio Pro, rebuild your bundle using the Native Builder’s build command. For more information on the build command, see the Build section of the Native Builder reference guide. Then, do the following: Reload the app on your phone. Put the app in the background by returning to your mobile device’s home screen. On your desktop browser, open the Administration page and click the Devices tab. Now you should be able to see registered devices (which is probably only one: your testing device). Send a notification by doing the following: Click your device listed under Registered Devices and click New Message.