I am trying to hide a field on a suitelet

field.updateDisplayType({ displayType: serverWidget.FieldDisplayType.HIDDEN });

and then in a client script on a fieldChanged I am trying

field.isDisplay = true

or

field.isDisplay = false

based on a checkbox, however it does not work if I hide the field on a suitelet, it only works if I did not set anything on the suitelet, I want to hide the fields by default, so I am doing that in a pageInit event, does anyone know a more elegant way to do it via suitelet?