Using “share_open_graph” Facebook UI to create dynamic share dialog for quiz results

I have done with share_open_graph method with object like this,,

FB.ui({
    method: 'share_open_graph',
    action_type: 'og.shares',
    action_properties: JSON.stringify({
        object : {
           'og:url': 'http://astahdziq.in/', // your url to share
           'og:title': 'Here my custom title',
           'og:description': 'here custom description',
           'og:image': 'http://example.com/link/to/your/image.jpg'
        }
    })
    },
    // callback
    function(response) {
    if (response && !response.error_message) {
        // then get post content
        alert('successfully posted. Status id : '+response.post_id);
    } else {
        alert('Something went error.');
    }
});