transforming message form SSE channel

Hi,

i.g.h.a.s.f.SseActor - Received matching message {"data":"{\"id\":11067464,\"reference\":\"9c20d4a4-1e7c-4328-999d-46e6f925e76f\",\"originalTimestamp\":1548614179322,\"timestamp\":1548614199720,\"priority\":90}"}

As you can see the value of “data” is a JSON String. For my case i would require the “reference” → "9c20d4a4-1e7c-4328-999d-46e6f925e76f" value in session in order to proceed further in simulation. My SSE check looks like:

`
check(
jsonPath("$.data").saveAs(“message”)
)

`

I know about transformOption to transform the string but I am unable to find a way to do this.

`
check(
jsonPath("$.data").transformOption(??).saveAs("reference")
)
`
`

Thanks in advance for the help.

Br
Paresh