Hi iam sending card details via paypal omnipay. payment showing success but not appearing in paypal

1. Hi I am ingerating paypal/omnipay. o am sending credit card details to paypal,this is showing success. but i cannot find any of the transactions in my paypal sandbox account. My code is like this:

                  $card = new CreditCard($formData);
                  $response = $this->gateway->purchase(
               [
                   'amount' => '10.00',
                   'currency' => 'USD',
                   'card' => $card ,
                   'returnUrl' =>url('/paypalreturn'),
                   'cancelUrl' =>url('/cancelpaypal'),
               ]## Heading ##
           )->send(); 
   the response from paypal like
   
     "TOKEN" => "EC-262806394V614015G"
       "TIMESTAMP" => "2019-07-25T16:40:24Z"
       "CORRELATIONID" => "3cc9ebc7e1458"
       "ACK" => "Success"
       "VERSION" => "119.0"
       "BUILD" => "53374502"
   
   

all is going well , except i cannot see the transaction in paypal sandbox.Can any one tell me where i am going wrong? Thanks for help in advance

via Chebli Mohamed