Creating a property selector Expression from a string

I'm trying to generate a "Property Selector" from a string.

Let me explain myself a bit with a Real life example:

We have a Class Person with a Name (string) property.

I could manually create a "property selector" like this propertySelector writing:

Expression<Func<Person, string>> propertySelector = x => x.Name;

But I would like to get the same property selector with my method.

var propertySelector = CreatePropertySelectorExpression<Person, string>("Name");

What I have so far is this:

public static Expression<Func<TIn, TOut>> CreatePropertySelectorExpression<TIn, TOut>(string path)
{
    Expression exp = Expression.Parameter(typeof(TIn), "x");
    foreach (var property in path.Split('.'))
    {
        exp = Expression.PropertyOrField(exp, property);
    }
    return exp;
}

But... I've got and invalid cast error!

Cannot implicitly convert type 'System.Linq.Expressions.Expression' to 'System.Linq.Expressions.Expression>'. An explicit conversion exists (are you missing a cast?)

I'm very new to Expressions and I don't know how to continue :(