# name var (regex)

Source: https://ref.dm-lang.org/regex/var/name
Added in BYOND 510.

The pattern that was used to create this regular expression. Changing this value after the datum is created will not change how the expression behaves.

### See also
- [regex datum](https://ref.dm-lang.org/regex/index.md)
- [flags var (regex)](https://ref.dm-lang.org/regex/var/flags.md)