setTranslation results in NaN? (Javascript Version)

[QuickMick]

after creating my body, i want to teleport it to a specific position using setTranslation, but as you see here: setTranslation(0, 15, 0) for the body results in {x: NaN, y: NaN, z: NaN}

i did it using the chrome console, so nothing else is happening and no other body is added to the world

[QuickMick]

nvm, it seems setTranslation needs a vector-object