question: extending slices and getting data out

[SandyWalsh]

Sorry for the n00b questions ... been having fun playing with this library.

I'm doing this

        type Foo {
               Things []string
        }

        ptrs := []*Foo{}
	err = ev.Define("foo", ptrs)
	if err != nil {
		return nil, err
	}

	_, err = vm.Execute(ev, nil, script)
	if err != nil {
		return nil, err
	}

	outi, err := ev.Get("foo")
	if err != nil {
		return nil, err
	}

and in my script I'm (effectively) doing

    foo[0].Things = foo[0].Things + "new thing"

But I'm not seeing "new thing" coming out. Should I be using some sort of append()-like call?

Also, the Execute() call has a return value ... what's in it? And how do I set it? Don't see anything in the docs about it.

[SandyWalsh]

nm ... figured it out.