XML-RPC php function With Custom Fields Not Working!

I Use This Function for my sites:

function my_xmlrpc_post($title,$body,$username,$password,$imdb_id,$pooster,$download_links,$categories = array(1)){
	$rpcurl = 'https://www.imdbdl.com/xmlrpc.php';
    implode(",", $categories);
	$XML = "<title>$title</title>".
	"<category>$categories</category>".
	$body;
	$cflds = array(
		array( 'key' => 'imdb_id', 'value' => $imdb_id ),
		array( 'key' => 'pooster', 'value' => $pooster ),
		array( 'key' => 'download_links', 'value' => $download_links )
	);
	$content = array('post_type' => 'post', 'title' => $title, 'description' => $body, 'custom_fields' => $cflds);
	$params = array('',$username,$password,$content,$XML,1);
	$request = xmlrpc_encode_request('blogger.newPost',$params);
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
	curl_setopt($ch, CURLOPT_URL, $rpcurl);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_TIMEOUT, 1);
	curl_exec($ch);
	curl_close($ch);
	return true;
}

It Does not Working in my domain, but it works on the other domain!!!!
in both of domains, I was Enabled The XML-RPC option on the settings menu!
so what is my problem?!