noob question

[Vaibhav Tiwari]

i am trying to use zap history filter , i need to filter result for links containg only the letter a , but it doesnt work , what i did is went to history tab > filter > in Url inc regex , i wrote a , then apply but after that everything is filtered out nothing is shown

[Ivan Tomilov]

Hiya!

As far as I remember ZAP is using java regexp, so I think you should use something more like it.

I don't know the idea of links you're working with so I'll assume that it's a http or https:

```

http.*://.*a.*

```

This will PROBABLY return you all the links that have "a" in it

also you can work your way through that via something like this: https://regex101.com/

On that website you can fill in some placeholders and try to get exact match of what you need and train yourself how to work with it

Hope it'll help ya!