Help with inventories?

So, I'm creating custom inventories like so:

Code:

    final Inventory inv = Bukkit.getServer().createInventory(e, 9, ChatColor.DARK_GRAY + "Drug Dealer"); 

Then in my listener I have the following code blocks:

Code:

 int weedID = e.getInventory().first(Material.INK_SACK);
Bukkit.getServer().broadcastMessage("" + weedID); 
ItemStack weed = e.getInventory().getItem(weedID);
weed.setAmount(weed.getAmount() - 1); 

The broadcast message is always returning the cactus green that I have in the custom inventory, instead of the player's inventory. How would I check if the player's inventory has the item, not the custom inventory?

 

You can access the players inventory through player.getInventory(). Then you can do the same operations as you did on the other inventory

 

Alright, I used:

Code:

 if (e.getWhoClicked().getInventory().contains(Material.INK_SACK)) 

and it worked. Thanks!