Error in Define Blazor Component Parameter

[Parameter]public object Selected{    get => BindObject;    set    {        if (BindObject == value)            return;        BindObject = value;        SelectedChanged.InvokeAsync(BindObject);    }}[Parameter]public EventCallback<object> SelectedChanged { get; set; }

In use:

<MyComponent @bind-Selected="person" />

Error CS1503
Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<CustomBlazorComponents.Components.Pages.Home.Person>' to 'Microsoft.AspNetCore.Components.EventCallback'

How do I have an EventCallback (for two-way binding) of type object?