Play 3d video at certain moment

Hi I am trying to play 3d videos.
But following the documentation I only get the video to play immediately after scanning the qr code, but what I need is, to play it after a few seconds of seeing the trigger.
How do I do it?

I would suggest Z.after

Can you help me with this?

what I have now is:

const Video_mp4 = symbol.nodes.Video_mp4;
parent.on(“seen”, () => {
// Runs when seen occurs on the parent node
Video_mp4.start();
});

How could I implement [Z.after(…)]