Future return is undefined

I have a situation (and tried every solution I can find on the internet )
The code:

if (Meteor.isServer) {
    validateAddress: function() {
        var fut = new Future();
          fut['return']("some text");
        }, 1000);
        return fut.wait();

and on the client side I call:

Meteor.call("validateAddress", function(res){

And it gives me undefined. My guess is that I can’t receive a future promise on the client?

EDIT: my callback function should have been function(err, res) {…} it’s working now, thanks!