I have Entity Like this

```
 public class Person
{
    public string FirstName { get; set; } 
}

public class Employee
{
    public string EmployeePhoto { get; set; }
    public virtual Person Person { get; set; } 
}

```

so when I try to create new entity on breezjs on client side 

```
manager.createEntity('Employee');

```

it didnt create the person entity with it that unable to bind like this

```
<input type="text"  data-ng-model="vm.employee.person.firstName" placeholder="First Name" />

```

but it show me the following error 

> 
> Cannot read property 'entityState' of undefined
> 
> 
>