WordPress Plugins DWQA and myCred: Adding myCred points when comment on DWQA Question or Answer is added

mycred-on-dwqa-comments

// Note: Sadly you need to make one hack into the DWQA plugin as they didn't want to add a new do_action at this place. 
// I was a bit disappointed with that answer, however you need to add the do_action into the DWQA plugin yourself.. :-/ 

// HOW TO MAKE THIS WORK: 
// First add this whole PHP chunk to your theme's functions.php or into your custom plugin.
// Then copy this:   do_action( 'kx_dwqa_add_comment' ); 
// Go to file dw-question-answer/inc/actions.php to the function dwqa_comment_action_add() 
// and paste it right after the ob_end_clean(); - in the next line. 
// That's it, save and test ;)  


// Adding myCred points when comment on Q/A is added

if ( function_exists( 'mycred' ) && is_user_logged_in() ) :

	add_action( 'kx_dwqa_add_comment', 'kx_add_points_for_dwqa_comments' );
	
	function kx_add_points_for_dwqa_comments() {
				
				$user_id = get_current_user_id();
		
				// Init myCRED
				$mycred = mycred();
			
				// Add log entry and adjust the users balance
				$mycred->add_creds(
					'reference',
					$user_id,
					3,
					'Beads for Approved Comment on Q/A'
				);
		
	}
			
endif;

do you need to have myCred plugin installed on the WP site as well before running the above code?

Would it be possible to get some help setting this up. Having this working would absolutely make my week!