Replace Filter Regular Expression

[NuclearFox]

It would be great if there was a huge example page or a faq page about black widow filters....
with lots of examples ...

Currently, I have the site working great,
however.... I would like to work on the substitution filter

so currently I would like the scanner to find /thumb_randomimagename.jpg and replace it with /big_randomimagename.jpg

If I understand the filter correctly,
I would type in the first box /thumb_([^/]+\.jpg) and in the second box I would type /big_$1 Is this correct? (using regular expression)

[Support]

Lots of example, but not the right ones! The Internet is full of differences.

As for the regex part, you are correct.