How to set video playback endpoint in YouTube Player API?

Question

YouTube

In the settings of the constructor of the created player object, there is the END property, which specifies the end time of video playback in seconds.

player = new YT.Player('ID_плеера', {
            height: '360',
            width: '640',
            videoId: 'M7lc1UVf-VE',  
            playerVars: 
                {
                start: 60,
                end: 120
                },
            events: 
                {
                'onReady': onPlayerReady,
                'onStateChange': onPlayerStateChange
                }
        })

How can I change this value after creating the player object?