Call a Hub method from c#

Question

I want to call a hub method from my aspx.cs file and I don't know how. I've already searched for answers and nothing works, this seems to work for others, but it's also not working

var context = GlobalHost.ConnectionManager.GetHubContext<ChatHub>();
context.Clients.All.brod("notify called");

This the caller method:

public void Notify()
{
    var context = GlobalHost.ConnectionManager.GetHubContext<ChatHub>();
    context.Clients.All.brod("notify called");
}

This is the js method for displaying:

chat.client.brod = function (msg) {
                                     messages.append('<li>'+msg+' </li>');
                                  }

So, how to call a Hub method from C#?

Please help...