Display custom meta field value in elements

Hi there,

I would like to display the value of a custom meta box after each post content. I embedded the following code into my functions.php to display the value on each post and the values are displayed at the very top of each post, but I would like to show them after the main content of each post.

add_action('the_post', function($post, $query){
	if ( is_single() && 'idea' == get_post_type()) {
		    $post_id = $post->ID;

    //get voters
    $voters = get_post_meta($post_id,'up-voters',true);

    //only continue if voters exist
    if(count($voters)){
        //start output
        echo '<ul class="voters-listing">';
		?>
		<p> Positiv </p>
		<?php
            //loop through voters
            foreach($voters as $voter){

                $user_id = $voter[0];
                $vote_time = $voter[1];
                $user_object = get_userdata($user_id);

                $voter_name = $user_object->first_name.' '.$user_object->last_name;
                $voter_edit_link = get_admin_url().'user-edit.php?user_id='.$user_id;

                $vote_time_nice = date_i18n(get_option( 'date_format' ) .' '.get_option( 'time_format' ),$vote_time);

                echo '<li>';

                    //do image
                    echo '<img class="idea-author-profile-image" src="'.esc_url(idea_push_get_user_avatar($user_id)).'" />';
                    //do text

                    echo '<a href="'.$voter_edit_link.'">'.$voter_name.'</a> <em>'.$vote_time_nice.'</em>';
                echo '</li>';
            }

        echo '</ul>';
    }

That's why I would like to ask you, if there is a possibility with GeneratePress to get the output of these custom field at the bottom of each post?

Thank you very much for your advice,
Daniel