Play 2.6.11 Joda DateTime ISODate Issue

[William Beh]

I'm using play 2.6 and reactivemongo. I'm having issue with ISODate. On mongodb the date is currently store as ISODate.

I keep getting this error

[JsResultException: JsResultException(errors:List((/sys/cdat,List(JsonValidationError(List(error.expected.date),WrappedArray())))))]

The class I used

case class System (

   eid: Option[String],

   cdat: Option[DateTime],

   mby: Option[String],

   dby: Option[String]

)

case class Company (

    _id: BSONObjectID,

    c: String,

    ct: String,

    sys: Option[System]

)

object CompanyFormats{

   import play.api.libs.json._

    val pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"

   implicit val dateFormat = Format[DateTime](JodaReads.jodaDateReads(pattern), JodaWrites.jodaDateWrites(pattern))

   implicit val systemFormat = Json.format[System]

    implicit val companyFormat: OFormat[Company] = Json.format[Company]

}

Appreciate help. I tried a few different format but still getting the same error.