How can i do that?

    /**
     * Get the specified or active user
     * @return boolean|modUser
     */
    public function getUser() {
        $user = $this->getProperty('user',false,'isset');

        /* verify authenticated status if no user specified */
        if (empty($user) && !$this->modx->user->hasSessionContext($this->modx->context->get('key'))) {
            $this->user = false;
        }
        /* specifying a specific user, so try and get it */
        if (!empty($user)) {
            $username = $user;
            $userNum = (int)$user;
            $c = array();
            if (!empty($userNum)) {
                $c['id'] = $userNum;
            } else {
                $c['username'] = $username;
            }
            $this->user = $this->modx->getObject('modUser',$c);
            if (!$this->user) {
                $this->modx->log(modX::LOG_LEVEL_ERROR,'Could not find user: '.$username);
                $this->user = false;
            }
        /* just use current user */
        } else {
            $this->user =& $this->modx->user;
        }
        return $this->user;
    }
}
return 'LoginProfileController';

[[Peoples? &limit=`5000` &tpl=`MyPeoplesTplChunk`]]

<li class="[[+cls]]">[[+username]] <a href="[[~99? &userId=`[[+id]]`]]">See My Profile</a></li>

[[Profile? &user=`[[!GetUserId]]`]]

<p>Username: [[+username]]</p>
<p>email: [[+email]]</p>

<?php
/*GetUserId snippet */
return $_GET['userId'];