How to set a value according to a specific pattern

My customer has a specific numbering system that I want to autogenerate using a Business Rule in the following:

MyCode = "T" + "0000" + Code

Having:

MyCode could preferably be Code in the entity.

Code is code of the entity with autoincrement enabled.

The total length of MyCode should always be 10 ("T" + x number of "0" + incremented Code)

Is this possible using Business Rules or anything else?

Thanks Stig