Hello @ABurt, Thank you for your response, that information will be very useful for me in the future. Although, my problem is not to check the file extension at Demisto's level. The problem is that the external API which I am using, receives the file like "<_io.BufferedReader name='71_313@71'>" using python open() method, and checks that name to read the extension. I need that name to be something like "myfile.xls" so the API could read it properly and recognize the file to store it. I hope it's is clearer now. Thank's in advance, Alejandro.
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