diff --git a/src/ConvergeGateway.php b/src/ConvergeGateway.php
index edd25d0..91076bb 100644
--- a/src/ConvergeGateway.php
+++ b/src/ConvergeGateway.php
@@ -117,6 +117,8 @@ public function getDefaultParameters()
             'merchantId' => '',
             'username' => '',
             'password' => '',
+            'ssl_show_form' => false,
+            'ssl_result_format' => 'ASCII',
         );
     }
 
@@ -183,6 +185,26 @@ public function setPassword($value)
         return $this->setParameter('password', $value);
     }
 
+    public function getSslShowForm()
+    {
+        return $this->getParameter('ssl_show_form');
+    }
+
+    public function setSslShowForm($value)
+    {
+        return $this->setParameter('ssl_show_form', $value);
+    }
+
+    public function getSslResultFormat()
+    {
+        return $this->getParameter('ssl_result_format');
+    }
+
+    public function setSslResultFormat($value)
+    {
+        return $this->setParameter('ssl_result_format', $value);
+    }
+
     /**
      * @param array $parameters
      * @return \Omnipay\Elavon\Message\ConvergeAuthorizeRequest
diff --git a/src/Message/ConvergeAbstractRequest.php b/src/Message/ConvergeAbstractRequest.php
index d56c289..2d9cdb8 100644
--- a/src/Message/ConvergeAbstractRequest.php
+++ b/src/Message/ConvergeAbstractRequest.php
@@ -325,7 +325,7 @@ protected function getBaseData()
             'ssl_user_id' => $this->getUsername(),
             'ssl_pin' => $this->getPassword(),
             'ssl_test_mode' => ($this->getTestMode()) ? 'true' : 'false',
-            'ssl_show_form' => $this->getSslShowForm(),
+            'ssl_show_form' => ($this->getSslShowForm() && ($this->getSslShowForm() != 'false')) ? 'true' : 'false',
             'ssl_result_format' => $this->getSslResultFormat(),
             'ssl_invoice_number' => $this->getSslInvoiceNumber(),
         );