New to Appian, Writing to a recordtype

I’m trying to write to a recordtype in Appian but I keep getting this error and I have no clue why.  

“Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error [evaluation ID = 88f9f:179c1] : An error occurred while executing a save: Expression evaluation error at function a!writeRecords [line 124]: Record Type constructor must use keywords”


…

a!buttonWidget(
            label: "Submit Request",
            disabled: not(local!bookingResult.isValid),
            saveInto: {
              a!writeRecords(
                records: 
                  'recordType!{UUID}CRBTN_Booking'(
                    'recordType!{UUID}CRBTN_Booking'.fields.roomName: local!roomName,
                    'recordType!{UUIDCRBTN_Booking'.fields.roomCapacity: local!roomCapacity,
                    'recordType!{UUID}CRBTN_Booking'.fields.attendeeCount: local!attendeeCount,
                    'recordType!{UUID}CRBTN_Booking'.fields.requestedBy: loggedInUser(),
                    'recordType!{UUID}CRBTN_Booking'.fields.status: "Pending"
                  )
                ,
                onSuccess: {
                  a!save(local!roomName, null),
                  a!save(local!roomCapacity, null),
                  a!save(local!attendeeCount, null),
                  a!save(local!confirmationMessage, "Your booking request was submitted.")
                },onError: {
                  a!save(local!confirmationMessage, "Something went wrong: " & fv!error)
                }
              )
            },
            submit: true,

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