# PlayerClass.server_onInventoryChanges

Called when the [Player](../Game-Script-Environment/Userdata/Player.md) has changes in the inventory [Container](../Game-Script-Environment/Userdata/Container.md).

**Kind:** Callback

**Environments:** Game

## Game

**Callback side:** Server

``` { .lua .api-signature }
PlayerClass:server_onInventoryChanges( inventory, changes )
```

[Open the full Game reference](../Game-Script-Environment/Classes/PlayerClass.md#server_oninventorychanges)

Will receive a table listing the changes.

Element format: 

| Type | Name | Description |
| --- | --- | --- |
| [Uuid](../Game-Script-Environment/Userdata/Uuid.md) | uuid | The item uuid |
| integer | difference | The change in amount. Positive numbers mean item gain, negative item loss. |
| [Tool](../Game-Script-Environment/Userdata/Tool.md) | tool | (Optional) If the item is a [Tool](../Game-Script-Environment/Userdata/Tool.md), this is the tool. Otherwise nil. |

**Parameters:**

| Name | Type | Description |
| --- | --- | --- |
| `self` | table | The class instance. |
| `inventory` | [Container](../Game-Script-Environment/Userdata/Container.md) | The player's inventory [Container](../Game-Script-Environment/Userdata/Container.md). |
| `changes` | table | A table listing the changes. \{\{uuid=[Uuid](../Game-Script-Environment/Userdata/Uuid.md), difference=integer, tool=[Tool](../Game-Script-Environment/Userdata/Tool.md)\}, ..\} |