Question: I create a weekly report on sales opportunities and am being asked to report on changes (e.g. change in deal size, new deals, closed deals), specifically looking at the biggest changes. 

Any tips on how to accomplish this?

Answer: 
Replace `\.` by `[.,]`. You'll get the following regex

```
^[0-9]{1,5}([.,][0-9]{0,2})?$

```
Try this

```
^[0-9]{1,5}([.,][0-9]{0,2})?$

```

[**Regex Demo**](http://rubular.com/r/A5bF9uL7yN)