QueryService_PostQuery

[Uthayam]

hi team,

this is my curl 
curl --location 'https://rain.rfgb.net:50000/b1s/v1/QueryService_PostQuery' \
--header 'Content-Type: application/json' \
--header 'Cookie: B1SESSION=dfd2c4e0-a4cf-11f0-c000-7ced8d26a250-140551572248448-19611; ROUTEID=.node3' \
--data '{
"QueryPath": "$crossjoin(Orders,Orders/DocumentLines)",
"QueryOption": "$expand=Orders($select=DocEntry,DocNum),Orders/DocumentLines($select=ItemCode,LineNum)&$filter=Orders/DocEntry eqOrders DocumentLines/DocEntry and Orders/DocEntry ge 3 and Orders/DocumentLines/LineNum eq 0"
}'
i got below error 

{

    "error": {

        "code": 201,

        "message": {

            "lang": "en-us",

            "value": "Not supported query option"

        }

    }

}
How To Resolve It please explain