Pattern works outside of Alteryx but not in Alteryx

[alexg1]

So the title says it all. I am trying to extract a sheet name from the Filename column of an Excel file. So the string I am trying to pull data from looks like this:

[pc file path].xlsx|||`run_1$`

And my target string that I want to extract looks like this:

run_1

And my RegEx pattern looks like this:

\`(.*?)\`

When I try this pattern or similar ones in online RegEx testers I can get the result I want, or close enough that I can clean it up with additional tools. But depending on how I configure the Alteryx RegEx tool when I try it using the RegEx tool's parse mode I either get an empty column, or the full string I am trying to extract my target string from in one column, and an additional empty column. I'm not sure if I'm misunderstanding the examples and documentation Alteryx gives, or if this is due to my lack of experience with Regex generally. Any help is appreciated!

[Christina_H · Accepted solution]

You don't seem to need to escape the ` character, this worked for me:

`(.*)`

[alexg1]

That was perfect, thank you! I guess I'm just not used to how Alteryx implements the syntax yet.