Hi Everyone, I am trying to use the API to post subscriber through a form. I have successfully posted test subscribers, but the problem is I am unable to post a subscriber WITH tags. Here is my test code: header("Content-Type: application/json; charset=utf-8"); //create array of data to be posted $post_data = array( "api_key" => "QUZeZD87ex2TGLBWDIjWVA", "email" => "jonsnow@example.com", "first_name" => "Jonny", 'tags' => array('test1','test2') ); $url = "https://api.convertkit.com/v3/forms/xxxxxxx/subscribe"; $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,$url); curl_setopt($ch,CURLOPT_HEADER, 0); curl_setopt($ch,CURLOPT_POST, 1); curl_setopt($ch,CURLOPT_POSTFIELDS, $post_data); curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, 0); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT ,30); curl_setopt($ch,CURLOPT_TIMEOUT, 20); $response = curl_exec($ch); curl_close ($ch); echo $response;