The defautl field size of custom field's possible_values field is 255. It is small to use. So I'm really hope to update the value to 4096.

For Example, I want define a custom field to list client os. My possible_values is:

Microsoft Windows 98|Microsoft Windows Me|Microsoft Windows 2000 Professional|Microsoft Windows 2000 Server|Microsoft Windows 2000 Advanced Server|Microsoft Windows 2000 Datacenter Server|Microsoft Windows XP Starter|Microsoft Windows XP Home|Microsoft Windows XP Professional|Microsoft Windows XP Media Center|Microsoft Windows XP Professional x64|Microsoft Windows XP Tablet PC|Microsoft Windows 2003 Standard|Microsoft Windows 2003 Endterprise|Microsoft Windows 2003 Datacenter|Microsoft Windows 2003 Web|Microsoft Windows Vista Starter|Microsoft Windows Vista Home Basic|Microsoft Windows Vista Home Premium|Microsoft Windows Vista Ultimate|Microsoft Windows Vista Small Business|Microsoft Windows Vista Business|Microsoft Windows Vista Enterprise

If the field size is 255, this string will cut.