Jade Iterations and variables

Jade Iterations and variables

I'm trying to learn jade using express on nodejs.
I'm passing an array of objects to the index by
res.render('index', {
    title : '**'
    , skills : [
        { type: '**', desc: '**' }
        , { type: '**', desc: '**' }
        , { type: '**', desc: '**' }
    ]
} )
That I want to iterate in a jade file, so I did :
.skills
    each skill in #{skills}
        div
            label #{skill.type}
            label #{skill.desc}
But it doesn't work, I've tried tones of things but I still cannot make it work. Can anyone help ?