I am looking for the right way to limit the layers that are shown into layer list into the CreateDriveTimeArea widget generated by the WAB. I read here  that there is a property of the
called showSelectAnalysisLayer that should do the job. I modified the config_Analysis.json file into the widget/analysis folder to include the parameter, but there is no change in the behavior of the widget.
Is that property relevant for my need? Is there a known procedure to make only one layer available for analysis?