Hello Nicolas,
You need to first plot this single value of S11 in HFSS in a plot by selecting the specific frequency at which you want your S11. Save the design and close AEDT. Open Optislang, import the AEDT solver wizard and specify the path to the project. Once you see your plot name in the "Outputs" section in optislang, click and drag the plot to the "Responses" section like:
Go to the Variables section, and you should see your output as a [1:1] array as seen below:
To see the value of your variable, you may add an additional variable and in the expression section just use the function "$SIG_MAX_Y(
You are navigating away from the AIS Discovery experience