[Resuelto] problem with translating custom fields

Hi, i have some custom fields in posts added with :

register_post_meta( $pt->name, 'tcss_seo_title', [
'type' => 'string',
'single' => true,
'show_in_rest' => true,
]);

I have a wpml-config.xml :

tcss_seo_title
.....

When i add a post and try to translate i dont see the field in ATE translation.
If i complete the translation, edit the post field and save it again i see that translation needs update but when i edit the translation i still dont see the field.

I used the filter : wpml_tm_job_field_is_translatable for this field with no luck.

What should i do in order to view and translate the field?

best,