Remove tile for collect coins

[WebDevUa]

Hello

I want to collect coins in my platformer game, so i need to remove coin tile when my player overpap it.
So, in create function i add this
 

map.setTileIndexCallback(50, this.collectCoin, this);

And create new collectCoin method 
 

map.putTile(-1, layer.getTileX(player.x), layer.getTileY(player.y));
score += 10;

And thats work, but the number of points is accumulated too much, when the player is standing next to the coin itself, it does not disappear, and points are scored at a high speed

I try to use new TilemapLayer , but its causes an error 

alpha = 0 now work or I am doing something wrong
 

[WebDevUa]

Up topic

[Ryan Makinano]

we have the same problem