How do I scrape this?

[username]

Lets say I want to scrape a string that starts with certain text ie "xyz" and then I want to scrape next 12 letters, whatever they might be, but there is no certain ending. So how do i make zenno to scrape xyz and then 12 characters?

 

[username]

A follow up, also I would like to filter out characters, spaces etc. and leave only numbers to that string.

 

[bigcajones]

You can do this with javascript. Google it and I'm sure you will find what you are looking for. Check on the w3school site, they have lots of examples of javascript.