Body: null when using .jsonBody to POST

[andrewcihon415]

I am trying to post data using ".jsonBody" but every time it tries to POST it returns a Body: null. Am I formatting the json incorrectly? Any suggestions?

 var intHR = heartRateBpm.value.toInt()
        data class tobesent(
            var devID: String,
            var currentDB: Float,
            var currentHr: Int,
            var userLatitude: Float,
            var userLongitude: Float,
        )
        val send = tobesent("Andy",0f,intHR,0f,0f)
        Fuel.post("https://smart-sense-dashboard.herokuapp.com/api/sensors/")
            .header(Headers.AUTHORIZATION, "4a16b669-43bc-412a-8dad-18dc7fb199d9")
            .jsonBody(Gson().toJson(send).toString())
            .responseString()
            .also { println(it) }