title: Azure Copy Files from AZDatalake to AZBlob sorage Dynamic
body: <p>I want to copy files from azure data lake storage to azure blob storage. when i use static file name it's copying successfully but it is not getting success while using dynamic file name.</p>
  <p>I have followed same process as per below blog but getting String type conversion error.</p>
  <p>ErrorMessage:
  Error code : 2200</p>
  <p>Failure type : User configuration issue</p>
  <p>Details:
  ErrorCode=UserErrorInvalidValueInPayload,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=Failed to convert the value in 'fileName' property to 'System.String' type. Please make sure the payload structure and value are correct.,Source=Microsoft.DataTransfer.DataContracts,''Type=System.InvalidCastException,Message=Object must implement IConvertible.,Source=mscorlib,'</p>
  <p>Reference Blog : <a href="https://www.c-sharpcorner.com/article/extract-file-names-and-copy-from-source-path-in-azure-data-factory/" rel="nofollow noreferrer">https://www.c-sharpcorner.com/article/extract-file-names-and-copy-from-source-path-in-azure-data-factory/</a></p>