diff --git a/app/Helpers/helpers.php b/app/Helpers/helpers.php
index 894ab23..d199476 100644
--- a/app/Helpers/helpers.php
+++ b/app/Helpers/helpers.php
@@ -454,15 +454,16 @@ function syncWithBankSystem(
         'Content-Type' => 'application/json',
         'Authorization' => 'Basic YWRtaW46UUFad3N4MTIz'
     ];
-    $body = '{
-        "ecomId": "'.$ecomId.'",
-        "agentId": "'.$agentId.'",
-        "eposId": "'.$eposId.'",
-        "account": "'.$account.'",
-        "rnn": "'.$rrn.'",
-        "amount": "'.$amount.'",
-        "payPurpose": "'.$payPurpose.'"
-    }';
+    $body = sprintf('{
+        "ecomId": "%s",
+        "agentId": "%s",
+        "eposId": "%s",
+        "account": "%s",
+        "rnn": "%s",
+        "amount": "%s",
+        "payPurpose": "%s"
+    }', $ecomId, $agentId, $eposId, $account, $rrn, $amount, $payPurpose);
+    
     $request = new GuzzleRequest('POST', 'http://10.3.158.102:8888/api/paytrn/new', $headers, $body);
 
     try {