Improper error message is thrown while creating dataset using parameterized DDL

curl --request POST 'http://10.112.205.104:8095/analytics/service' \

--header 'Content-Type: application/x-www-form-urlencoded' \

--header 'Accept: */*' \

--header 'Authorization: Basic QWRtaW5pc3RyYXRvcjpwYXNzd29yZA==' \

--data-urlencode 'statement=create dataset x on `beer-sample` where geo.lat between $f and $t;' \

--data-urlencode '$f="37"' \

--data-urlencode '$t="40"'

{

    "requestID": "ea9f3908-97ab-42ce-bf68-b640a7c6314b",

    "signature": {

        "*": "*"

    },

    "errors": [

        {

            "code": 24050,

            "msg": "No value for parameter: $f (in line 1, at column 57)"

        }

    ],

    "status": "fatal",

    "metrics": {

        "elapsedTime": "52.124883ms",

        "executionTime": "49.911408ms",

        "resultCount": 0,

        "resultSize": 0,

        "processedObjects": 0,

        "errorCount": 1

    }

}