WCF UriTemplate with different parameters

Hi,
 
i'm writing a wcf service and try to hold my Uri clean. I want to fire a "GET"-method with different parameters like that:

/// <summary>
/// Gives back a(n) Address by its id
/// </summary>
/// <param name="Address_id">The _id of the Address</param>
/// <returns>A(n) Address</returns>
[OperationContract(Name = "GetAddressById")]
[WebInvoke(Method = "GET", UriTemplate = "/Address/?id={id}")]
Address GetAddressById(int id);

and like that:

/// <summary>
/// Gives back a(n) Address by its City
/// </summary>
/// <param name="Address.City">The City of the Address</param>
/// <returns>A list of Address(e)s</returns>
[OperationContract(Name = "GetAddressByCity")]
[WebInvoke(Method = "GET", UriTemplate = "/Address/?City={city}")]
List<Address> GetAddressByCity(string city);

When i try to start the host, it says that i am not able to do something like that. Is there any possibility to enable such "multi"-uri with different parameters?