Tilemap layer collision

Phaser 3
1

Hey. I make ground layer like that:

const groundLayer = groundMap.createLayer('ground', ground, 0, this.groundLevel);

this.matter.world.convertTilemapLayer(groundLayer);

But when i try to add collision group to this layer, i got a error. How i can add collision group to tilemap layer?

Thanks

2

What’s the error? And see the tutorial:

4

I have read this, but still don’t know answer.
My task is : create balls who collides with ground, but not with each other. Ground is a tilemap layer. So my code is :

  const groundLayer = groundMap.createLayer('ground', ground, 0, this.groundLevel);
        groundLayer.setCollisionByExclusion(-1, true);
        this.matter.world.convertTilemapLayer(groundLayer);
       
  player = this.matter.add.sprite(125, 140, 'player')
  player.setCollisionGroup(2)
  
  circle = this.matter.add.sprite(140, 40, 'circle')
      .setBody('circle')
  
  circle.setCollisionGroup(2)
  circle.setCollidesWith(0)

So i also need add collision group / collision category to tilemap ground, otherwise coins will fall through.

but tilemap doesn’t have method setCollisionGroup/setCollisionCategory.