Automatically create translation

Hi,

I’ve been trying to write a function to create translation post automatically when the default language post is saved/published. It is because I do not want a new translation will erase all custom field values as they are “synced”.

function publish_article_add_translate( $ID, $post ) {

  if (strpos($post->post_title,'auto added')===false) {
    $org_id=$post->ID;
    if (!pll_get_post($org_id,'en')){
      $en_post=clone $post;
      $en_post->ID='';
      $en_post->post_title.=' (EN auto added)';
      $en_post_id=wp_insert_post( $en_post );
      pll_set_post_language($en_post_id, 'en');
    }
    else
      $en_post_id=pll_get_post($org_id,'en');

    if (!pll_get_post($org_id,'zh-hans')){
      $hans_post=clone $post;
      $hans_post->ID='';
      $hans_post->post_title.=' (简 auto added)';
      $zh_hans_post_id=wp_insert_post( $hans_post );
      pll_set_post_language($zh_hans_post_id, 'zh-hans');
    }
    else
      $zh_hans_post_id=pll_get_post($org_id,'zh-hans');    

    if (!pll_get_post($org_id,'zh-hant')){
      $hant_post=clone $post;
      $hant_post->ID='';
      $hant_post->post_title.=' (繁 auto added)';
      $zh_hant_post_id=wp_insert_post( $hant_post );
      pll_set_post_language($zh_hant_post_id, 'zh-hant');
    }
    else
      $zh_hant_post_id=pll_get_post($org_id,'zh-hant'); 

    $translationArray=array('en'=> $en_post_id ,'zh-hans' => $zh_hans_post_id, 'zh-hant' => $zh_hant_post_id);
    if (count($translationArray)==3)
      pll_save_post_translations($translationArray);

  }

}
// add_action( 'publish_fashion-article', 'publish_article_add_translate', 10, 2 );

The code only work if I die() the script right after the pll_sve_post_translations() function. I can’t figure out why it’s not working, any one has a thought?

https://wordpress.org/plugins/polylang/