ember-cordova cannot multi-upload photos with x-file-input

I am using the plugin from https://github.com/thefrontside/emberx-file-input. I want to multi-select photos while uploading. I can do it from the laptop. But when I use ember-cordova and create app on my android device, I cannot multi-select photos even though I have added the multiple = true in the code. Here is the code below,