Auto-increment custom fields

[saloisio]

Hi,

I'd like to add a custom field (numeric value) which automatically increments itself whenever an issue is reported on a project that uses this field. What's the best way of doing this? Some sample code would be much appreciated as I'm very new to PHP.

[szollosi]

Hi, I am looking for a soution also to have custom field auto incrementing number, and regular expresion, such as:
XX/345
XX/346
XX/347
XX/348
and also, not allowed to use twice the same number, expect it was delete.

I need it to record meeting decisions in a "Decisions" project.
Thanks the ideas.

[cas]

Suggest to write a plugin for this