# AllowUpload proc (client)

Source: https://ref.dm-lang.org/client/proc/AllowUpload

### Format
> `AllowUpload(filename, filelength)`

### When
> Called when the player attempts to upload a file to the server, through input() or a command.

### Default action
> Allows the upload by returning 1.

The client who owns this proc (src) is the one trying to upload the file. If this proc returns a true value, the upload will be allowed. Otherwise, it will be rejected.

```dm /AllowUpload/
client
   AllowUpload(filename, filelength)
      if(filelength >= 524288)  // 512K (0.5M)
         src << "[filename] is too big to upload!"
         return 0
      return 1
```

### See also
> [input proc](https://ref.dm-lang.org/proc/input.md)