How to set dynamic value in my Attribute

I would like to pass a dynamic variable as a parameter to my attribute. Here I want to use Environment.MachineName, see the code below:

public interface IMonitoringViewModelConfiguration : IConfigurationContainer
{
    [ConfigurationKey("MonitoringService", Environment.MachineName)]
    string ConnectionString { get; }
}

But I get this error: Error 1 An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type Abc.ServiceBus.Monitoring.ViewModel

Is there any workaround as clean as possible in order to pass my Environment.MachineName ?

Thanks.

John

PS: I've found some articles which talk about this case but it have been written like 2-3 years ago. But today, does the clr which comes from .NET 4.0 gives some nice solution ?