MVVMCross MvxBind, binding multiple values to one property

How do I use a combination of booleans values, to set the `enabled` property on a `MvxBind` button? For example: Using one boolean value, the binding is achieved with: ``` <Button android:text="Next" local:MvxBind="Enabled IHaveDoneEverything"/> ``` But how do I implement this using multiple boolean values? Things I've tried that didn't work: - Using an OR statement in axml. `local:MvxBind="Enabled (IHaveDoneThis | IHaveDoneThat)"` Using an extra property in my ViewModel. This didn't work due to the property not being 'set' and thus not being updated in the view. ``` public bool IHaveDoneAtleastSomething { get { return (IHaveDoneThis | IHaveDoneThat); } } ``` Using a custom valueconverter. ``` local:MvxBind="Enabled [IHaveDoneThis , IHaveDoneThat], Converter=MultipleBooleansToOneBooleanUsingORValueConverter"/> ```