Issue adding Notes to a SupportCase

Hi,

I am not able to post in 'Microsoft.NET' forum category as it is giving in invalid URL message.

I am trying add 'Notes' to an existing 'Support Case' through suite talk api.
I am able to add a note and for some reason, it does not tie to the 'Case' though I am referencing the 'Case' entity. I am able to view the notes in NS if the directly go to the 'Note' URL.
I am not sure if am missing some reference in the note object.

Here is my code:

                var caseRecordRef = new RecordRef
                {
                      internalId = caseInternalId,
                      type = RecordType.supportCase,