Answered Cannot remove object

<?php

if (isset($_POST["followid"]) && $_POST["action"] == "unfollow"){

$path = MODX_CORE_PATH . 'components/follows/';
$result = $modx->addPackage('follows',$path .
        'model/','mgc_');

if (! $result) {
    return 'Failed to add package';
}


$user = $modx->getUser();
$user_id = $user->get('id');

$follow_id = (int)$_POST["followid"];

$fields = array(
        'user_id' => $user_id,
        'follow_id' => $follow_id
 );	


 $unfollow= $modx->getObject('Follows', $fields);

   if ( $unfollow->remove() == false) {

         echo "error";
    }
   else{

       echo "ok";
    }
}

?>

if (! $unfollow) {
   echo "could not get Follows object";
}

<?xml version="1.0" encoding="UTF-8"?>
<model package="follows" baseClass="xPDOObject" platform="mysql" defaultEngine="MyISAM" version="1.1">
	<object class="Follows" table="follows" extends="xPDOSimpleObject">
		<field key="user_id" dbtype="int" precision="10" phptype="integer" null="false" index="index" />
		<field key="follow_id" dbtype="int" precision="10" phptype="integer" null="false" />

		<index alias="user_id" name="user_id" primary="false" unique="false" type="BTREE" >
			<column key="user_id" length="" collation="A" null="false" />
			<column key="follow_id" length="" collation="A" null="false" />
		</index>
	</object>
</model>