Is there something wrong with this loop

val parser: Parser = Parser()
        val stringBuilder: StringBuilder = StringBuilder(json_dict_string)
        val json: JsonObject = parser.parse(stringBuilder) as JsonObject
        val decemeber = json.array<String>("19. December - 2013")
        if (decemeber != null) {
            for (i in 0 until decemeber.size){
                val qna_list = decemeber.get(i)
                println(qna_list)

            }
        }