Integrating Facebook using GraphRequest on Android

Seeking for GraphRequest Expert who have experience in Publishing a multi-photo post with uploaded photos. I have uploaded local pictures to facebook, and i am trying to publishing a multi-photo post with uploaded photos. Please check this page [login to view URL] You can just check the page, and then you can see attached_media param is object array. But I don't know how i can put the values to that param.. [{"media_fbid":"1002088839996"},{"media_fbid":"1002088840149"}] The attached_media param's value must be like above. Please contact me if you have experience in this area. Check the description carefully.!!!