For example, is it possible to bind the label of a button to a "myButtonLabel" attribute by adding an expression string like in the following example?

```
  $A.createComponent(
        "ui:button",
        {
            "aura:id": "findableAuraId",
        //EXAMPLE:    
        "label": "{!v.myButtonLabel}",
        "press": cmp.getReference("c.handlePress")
        },
        function(newButton){
            //Add the new button to the body array
            if (cmp.isValid()) {
                var body = cmp.get("v.body");
                body.push(newButton);
                cmp.set("v.body", body);
            }
        }
    );

```