Systune problems finding signals in Simulink

Hi,

I'm trying to tune a simulink model (slTunable) with systune, using addControl and addMeasurement for signal names defined in the model. Right now pretty straightfoward small model. Systune is choking when the measurements are used in the tuningGoal field. I get a :

Error using slTunable/systune (line 68) Tracking requirement: The identifier "Alpha-sen" matches zero or more than one output signals

The tuneable object says it is there:

>> ST1.Measurements

ans =

    'Fresh/Demux/2[Alpha-sen]'
    'Fresh/Demux/1[Bank-sen]'

Tracking Goal:

TA = TuningGoal.Tracking({'Alpha-ref'},{'Alpha-sen'},4,.2);

>> TA

TA =

Tracking with properties:

       Input: {'Alpha-ref'}
      Output: {'Alpha-sen'}
    MaxError: [1x1 zpk]
       Focus: [0 Inf]
      Models: NaN
    Openings: {0x1 cell}
        Name: ''

[STUN,fSoft,~,Info] = ST1.systune(TA,OPT);

Thanks!

[Craig]

What are your IOs specified in the slTunbale object?

Thanks, -craig