gistfile1.phtml

<form method="post" action="<?php echo $variables['endpoint'] ?>">
    <input type="hidden" name="TransactionType"             value="<?php echo $variables['transaction_type'] ?>">
    <input type="hidden" name="CurrencyCode"                value="<?php echo $variables['currency_code'] ?>">
    <input type="hidden" name="AcquiringInstitutionCode"    value="<?php echo $variables['acquiring_institution_code'] ?>">
    <input type="hidden" name="MerchantType"                value="<?php echo $variables['merchant_type'] ?>">
    <input type="hidden" name="MerchantNumber"              value="<?php echo $variables['merchant_number'] ?>">
    <input type="hidden" name="MerchantTerminal"            value="<?php echo $variables['merchant_terminal'] ?>">
    <input type="hidden" name="ReturnUrl"                   value="<?php echo $variables['return_url'] ?>">
    <input type="hidden" name="CancelUrl"                   value="<?php echo $variables['cancel_url'] ?>">
    <input type="hidden" name="PageLanguaje"                value="<?php echo $variables['page_languaje'] ?>">
    <input type="hidden" name="OrdenId"                     value="<?php echo $variables['orden_id'] ?>">
    <input type="hidden" name="TransactionId"               value="<?php echo $variables['transaction_id'] ?>">
    <input type="hidden" name="Amount"                      value="<?php echo $variables['amount'] ?>">
    <input type="hidden" name="Tax"                         value="<?php echo $variables['tax'] ?>">
    <input type="hidden" name="MerchantName"                value="<?php echo $variables['merchant_name'] ?>">
    <input type="hidden" name="KeyEncriptionKey"            value="<?php echo $variables['key_encription_key'] ?>">
    <input type="hidden" name="Ipclient"                    value="<?php echo $variables['ip_client'] ?>">
    <input type="submit value="Pagar">
</form>