Adding function get_content

Hi, I have one problem.
This plugin don’t include sending content of each post. So, I try adding manually (class-wp-sms-notifications) but have one problem. When I send out new post I can’t receive SMS with content of post.

I use this code:
‘%title_post%’ => get_the_title($post->ID),
‘%the_content%’ => the_content ($post->ID), #own code#
‘%url_post%’ => wp_get_shortlink($post->ID),
‘%date_post%’ => get_post_time(‘Y-m-d’, true, $post->ID, true),

So, the problem is just here (I think)
‘ the_content ’ => the_content ($post->ID),

Which function I must use to get content of post?
I am also add wp-sms-meta-box and class-wp-sms-settings

I recommended you to adding this in next version

Thanks again ??