Android Question KeyValueStore custom type

Hi,

Is it possible to do below:

Type itemRecord (ID As String, Description As String )

Dim newRecord As itemRecord
Dim recordID As String

newRecord.Initialize
newRecord.ID ="test"
recordID = "record:" & newRecord.ID
newRecord.Description ="This is a test"
kvs.PutObject(recordID,newRecord)

It seems i'm not allowed to do this, it gives error 400 on storing this custom Type.

Cheers.