my code is:

@filePath = C:\\Users\\User\\Documents\\VnCM.pbix

POST .0/my/groups/{{groupId}}/imports?datasetDisplayName={{fileDisplayName}}&nameConflict=CreateOrOverwrite&subfolderObjectId={{folderId}}
Authorization: Bearer {{$aadV2Token appOnly}}
Content-Type: multipart/form-data; boundary=MfnBoundry
X-API-URI: {{aadV2AppUri}} 

--MfnBoundry
Content-Disposition: form-data; name="files"; filename="{{filename}}"
Content-Type: application/octet-stream

< {{filePath}}
--MfnBoundry--

and it is not working. When i am hardoded like here:

< C:/Users/User/Documents/VnCM.pbix --MfnBoundry--

it is working like a charm.

How to provide properly path to file?

Best, Jacek