Single Property

var config = {
    type: Phaser.WEBGL,
    width: 800,
    height: 600,
    backgroundColor: '#2d2d2d',
    parent: 'phaser-example',
    scene: {
        preload: preload,
        create: create
    }
};

var game = new Phaser.Game(config);

function preload ()
{
        this.load.setBaseURL('https://cdn.phaserfiles.com/v355');
    this.load.image('block', 'assets/sprites/block.png');
}

function create ()
{
    // var marker = this.add.image(100, 100, 'block').setAlpha(0.3);
    var image = this.add.image(100, 100, 'block');

    this.input.on('pointerdown', () => {

        var duration = Phaser.Math.Between(200, 1000);

        this.tweens.add({
            targets: image,
            x: Phaser.Math.Between(100, 700),
            y: Phaser.Math.Between(100, 500),
            ease: 'Power1',
            duration: duration
        });

        console.log('--- duration', duration);

    });
}