Custom Post email notification

Hello!
I use your plugin, and I trying to past the custom type description on our email notification, but I’m not able to.
Can you help?

Let me paste a part of it, putting in the part that doesn’t work, meaning that I doesn’t show the custom post type description.

$message .= ‘Descrição: ‘ . wp_trim_excerpt($post->ID) . ‘

‘;

‘;

I’ll wait for your feedback.

https://wordpress.org/plugins/gravity-forms-custom-post-types/