Trying to make Module gateway work!

[Belier]

Im making a module Gateway, but it isnt working. I dont know what Im doing wrong! can you help me out? =)

 

Thank you!

 

Posting the code:

<?php
// Desarrollado por Diseño & Programación, Hosting IT Polar
// www.itpolar.com

function cuentadigital_config() {
   $configarray = array(
    "CuentaDigital" => array("Type" => "System", "Value"=>"CuentaDigital"),
    "id" => array("CuentaDigital" => "Cuenta ID", "Type" => "text", "Size" => "20", ),
    "empresa" => array("CuentaDigital" => "Nombre Empresa", "Type" => "text", "Size" => "20", ),
   );
return $configarray;
}

function cuentadigital_link($params) {

# Gateway Specific Variables
$id = $params['id'];
$empresa = $params['empresa'];

# Invoice Variables
$invoiceid = $params['invoiceid'];
$description = $params["description"];
   $amount = $params['amount']; # Format: ##.##
   $currency = $params['currency']; # Currency Code

# Client Variables
$firstname = $params['clientdetails']['firstname'];
$lastname = $params['clientdetails']['lastname'];
$email = $params['clientdetails']['email'];
$address1 = $params['clientdetails']['address1'];
$address2 = $params['clientdetails']['address2'];
$city = $params['clientdetails']['city'];
$state = $params['clientdetails']['state'];
$postcode = $params['clientdetails']['postcode'];
$country = $params['clientdetails']['country'];
$phone = $params['clientdetails']['phonenumber'];

# System Variables
$companyname = $params['companyname'];
$systemurl = $params['systemurl'];
$currency = $params['currency'];

# Enter your code submit to the gateway...
$comision = $amount*0.0484;
if ($comision < 1.82)
{
	$comision=1.82;
}
$preciofinal = $amount + $comision;

$code = "
<p><u><font face=\"Verdana\" size=\"2\">
Sólo para residentes de Argentina Pagofacil,Rapipago o Bapropagos
</font></u></p><p><font face=\"Verdana\" size=\"1\">
Click en el botón <b>"imprimir cupón"</b> 
para imprimir cupon de pago<br>Monto final en 
<b>ar$ = ar$'.$precio.' + ar$ '.$comision.' de comision = <font color=\"#FF0000\">total ar$ ".$preciofinal."</font></b></font></p>
<FORM target=_blank action=\"https://www.cuentadigital.com/string.php\" METHOD=\"get\">	<p>	<input type=\"submit\" value=\"Imprimir cupón de pagos\"></p>	
<input type=\"hidden\" value=\"".$id."\" name=\"id\">
<input type=\"hidden\" value=\"WHMCSpagos\" name=\"codigo\"><
input type=\"hidden\" value=\"".$preciofinal."\" name=\"precio\">
<input type=\"hidden\" value=\"30\" name=\"venc\">
<input type=\"hidden\" value=\"".$empresa."\" name=\"site\">
<input type=\"hidden\" value=\"".$email."\" name=\"desde\">
<input type=\"hidden\" value=\"".$email."\" name=\"hacia\">
<input type=\"hidden\" value=\"Pago por Factura Nº ".$invoiceid." - ".$email." name=\"concepto\"></form>
";
return $code;
}

?>

[Belier]

anyone knows? =)