GQL queries with attributes

OK, solution found.

Against documentation in /gql, when you utilize SL1 attribute information the "id" is not the ID that is mentioned in docs, and everywhere else it is the DID,GUID etc, but in this context it points to name,

So actually here we needed to use it this way:

  type:harProvider
    attributes: {
    id:"BSM_Region"
    value:"Koillismaan kauppa"
  }, 

Thanks jchivers for info!