Solved Can't add enchanted item to player's inventory?

I am doing a shop where you can buy items. However, if the player wants to buy an enchanted pickaxe, it gives him a regular pickaxe. I'm giving the player the Itemstacks I use to set the shop. Why can't I add an enchanted item to the player's inventory?

 

I'm creating an ItemStack:

ItemStack item = new ItemStack(Material.Pickaxe);


then I enchant it:
ItemMeta itemMeta = item.getItemMeta();
itemMeta.addEnchantment(Enchantment.DIG_SPEED, 1);
item.setItemMeta(itemMeta);

then I add it to the player's inventory:

player.getInventory().addItem(item);

 

public void buyItem(Player player, ItemStack result){
player.getInventory.addItem(result);

}

And the Item is:
new ItemBuilder(Material.WOOD_PICKAXE).addEnchantment(Enchantment.DIG_SPEED, 1).build();

EDIT: Sry for double Posting, I forgot about it

EDIT by Moderator: merged posts, please use the edit button instead of double posting.