Date Field Controlling Other Field Visibility

// Listen to date field changes
window.formyoula.form_fields['Date Field'].on('all', function(options) {
  // Gte date field value 
  var date_field_value = this.get('value');
  // Check if date field is older then 6 months
  if ( moment().diff(moment(date_field_value), 'months') > 6 ) {
    // Set hidden checbox to true
    window.formyoula.form_fields['Date Field Validation Checkbox'].set({ value: true });
  } else {
    // Set hidden checbox to false
    window.formyoula.form_fields['Date Field Validation Checkbox'].set({ value: false });
  }
});