Create a document in attachmentfolder of LeanLead

Hey everyone,

At the moment, I have requirements to create a document in the attachment folder of an Lean Lead. I receive the document

from an webservice and I want to store that document in the attachment of the Lean Lead.

The problem is that the document won´t be stored in the LeanLead.

I debugged the code, but i can´t find any errors.

Please check my code below:

Many thanks for your help in advance.

Best Regards

Sebastian