Monitor receive String Regex

Receive string Regex is not working as expected on HTTP response.

Below is HTTP Respone:{"status":"UP","diskSpace":"status":"UP","total":30927785984,"free":25661333504,"threshold":10485760}}

We wanted monitor to be marked up if we see Status : UP from the response and ignore rest from above HTTP response. The regex created is not working for us can some one please help to accomplish this. Thanks

Current Receive which F5 is not accepting in monitor Config : ^{\s?"status"\s?:\s?(?:"UP"|"UNKNOWN")[\s\d\w\W\D\S\n]}