Ion-toggle and ng-false-value

Hello

Im trying to use the ionic toggle along with ng-true-value and ng-false-value. The ng-true-value state works great. However ng-false-value always sets ng-model to undefined. Has anyoneelse had this problem?

  <ion-toggle  
    id="{{field.sourceField.sourceFieldId}}" 
    name="{{field.sourceField.sourceFieldId}}" 
    ng-model="model.value" 
    ng-required="{{field.displayFormat.required}}"
    toggle-class="toggle-calm"
    ng-true-value="'{{field.ddEntry.options.optionsList[0].id}}'"
    ng-false-value="'{{field.ddEntry.options.optionsList[0].id}}'"
    
    validation-sounds="{{field.displayFormat.validationSounds}}"
    val-bubble>
    <span>{{model.value}}</span>
      <span ng-if="!field.displayFormat.required" class="input-label input-label-arvak">{{field.ddEntry.name}}</span>
      <span ng-if="field.displayFormat.required" class="input-label input-label-arvak"><i class="icon ion-asterisk arvak-field-warning-splat"></i>{{field.ddEntry.name}}</span>
      <span class="input-label-error" 
            ng-class="{'invisible-nospace':  !validation.requiredVisible || (formContainer[field.sourceField.sourceFieldId].$valid) || !field.displayFormat.required }">
          <i class="icon ion-alert-circled error"></i>Required
      </span>
      

  </ion-toggle>

maybe this is because you defined the same value for true and false?
try it simply with true and false