How to change the Image from Apprequests Dialog?

Question

How do I change this Image in the apprequests dialog?

FB.ui({ 
method: 'apprequests',
message: 'Some text...',
title: 'a title...' 
}, requestCallbackInviteOther);

There is no image option available for this dialog. But nevermind. Theres already set up an Image somehwere from an earlier project. But I cannot find it in the FB-App setting. Someone knows where to find it?

Answer 1

This image is your app icon-

You can change this in the App Details.

Note: This image can't be set dynamically while sending the app requests.