Getting motion Data of one Hand with hand.translation() doesn't work in Javascript

[pMack]

Hi Community,
I'm trying to produce a simple app which recognizes one or two hands and sends an event on a swipe of a hand.
I've tried to get the motion of one hand with hand.translation(sinceFrame) which gives back a Float32[] with [0,0,0], i debugged it and saw that the method translation just creates the array but doesn't fill it with values.
I also tried this with frame.translation(sinceFrame) wich worked fine, but frame.translation doesn't distinct between two hands.
I tried this with the leap-0.4.0.js and leap-0.4.1.js.
Is this a known bug? Is there a bugfix?
Can someone help me with this problem?

Greetings
Patrick

[pMack]

Nvm I see my issue I just got a invalid hand
Sorry

[Linda91]

I have the same problem even frames and hands are valid,
I tried to get translation from frame.translation(sinceFrame) or hand.translation(sinceFrame) but it always returns zeros
could you please share your code how it works with you
thank you in advance