On-Premise data gateway setup but can't get the correct paths or possibly logon account to get it to

Hi,

I have set up an on-premise gateway successfully and my Azure Logic all can see it in the drop down.

Here is my on-prem-gateway setup:

No matter what I do when I run my Logic app, I get the following error:

Body

{

  "status": 400,

  "message": "The requested action could not be completed. Check your request parameters to make sure the entity exists on your file system.",

  "source": "127.0.0.1"

}

I have tried putting a shared network location in the root folder box.

I have put the credentials from the On-premises data gateway service in the username box:

Basically I have tried every combination of everything in these boxes and I never get my logic all to write files using my on-prem gateway:

Here is the error:

{

    "statusCode": 400,

    "headers": {

        "Pragma": "no-cache",

        "x-ms-request-id": "e65709f5-f7a3-4964-8b88-a0502ce9b635",

        "Cache-Control": "no-cache",

        "Date": "Wed, 25 Jan 2017 05:16:19 GMT",

        "Set-Cookie": "ARRAffinity=490114b7708d082f2bca2639f8a68e283db0eba612ddd71036cf5a5cf2597f99;Path=/;Domain=127.0.0.1",

        "Server": "Microsoft-IIS/8.0,Microsoft-HTTPAPI/2.0",

        "X-AspNet-Version": "4.0.30319",

        "X-Powered-By": "ASP.NET",

        "Content-Length": "174",

        "Content-Type": "application/json; charset=utf-8",

        "Expires": "-1"

    },

    "body": {

        "status": 400,

        "message": "The requested action could not be completed. Check your request parameters to make sure the entity exists on your file system.",

        "source": "127.0.0.1"

    }

}

Here is the other settings in my file creation section of my logic app:

Note: when I click on the > arrow to the right of the FileSystem popup I get the error shown above.

I just can't seem to get any further with this.

Any help will be greatly appreciated

thanks

Russ