private async Task ChangePostRange(CommentData.PostData post) { string toPerm = null; if (CB_Range.SelectedIndex == 0) { toPerm = "A"; } else if (CB_Range.SelectedIndex == 1) { toPerm = "F"; } else if (CB_Range.SelectedIndex == 2) { toPerm = "M"; } await KakaoRequestClass.SetActivityProfile(post.id, toPerm, post.sharable, post.comment_all_writable, post.is_must_read); return; }