Hide field via user event script

/**
 * @description Hide field via user event script
 * @param context
 * @param stFldId id of the field to be hidden
 * @bIsHidden true|false if true, field will be hidden
 */
function fieldIsHidden(context, stFldId, bIsHidden){
    if(bIsHidden){
        context.form.getField({id: stFldId}).updateDisplayType({
            displayType : 'hidden'
        });
    }else{
        context.form.getField({id: stFldId}).updateDisplayType({
            displayType : 'normal'
        });
    }
}