Creating a module

[rafaht]

Hey guys!
I'm trying to create a module, but some piece of code doesn't working and I don't know why, because doesn't have error.

See:
module.zpm

Code:

        <h3><: Alerts list :></h3>

        <% if AlertsList %>
            <table class="table table-striped">
                <tr>
                  <th><: ID :></th>               
                  <th><: Title  :></th>
                  <th><: Message :></th>                   
                </tr>
                <% loop AlertsList %>
                <tr>
                    <td><~ alert_id ~></td>
                    <td><~ alert_title ~></td>
                    <td><~ alert_message ~></td>                     
                </tr>
                <% endloop %>
            </table>
            <@ CSFR_Tag @>
        <% else %>
        <p><: There are currently no alerts to display! :></p>
        <% endif %>

I tried replace <~ and ~> for <& and &>, but doesn't worked too.

The module displays until this piece: <h3><: Alerts list :></h3>.

The controller.ext.php corresponding code:

Code:

    /*

     * The 'worker' methods.
     */
    static function ListAlerts() {
        global $zdbh;
        $sql = "SELECT * FROM sentora_alerts";
        $numrows = $zdbh->prepare($sql);
        $numrows->execute();
        if ($numrows->fetchColumn() <> 0) {
            $sql = $zdbh->prepare($sql);
            $res = array();
            $sql->execute();
            while ($rowalerts = $sql->fetch()) {
        array_push($res, array('alert_id' => $rowalerts['alert_id'], 'alert_title' => runtime_xss::xssClean($rowalerts['alert_title']), 'alert_message' =>runtime_xss::xssClean($rowalerts['alert_message'])));
            }
            return $res;
        } else {
            return false;
        }
    }

    /*
     * End 'worker' methods.
     */

    static function getAlertsList() {
        global $zdbh;
        return self::ListAlerts();
    }

The database exists, the table and column names is correct. I verified.

Any ideas? :/
Thanks,