Regex \d failing in UiPath Studio

[rpadev77]

I am able to build the regex just fine on websites like regex101.com but not getting any matches within studio.

Code: (?<=Delito Pena Principal Pena\s\s\d ).+

Online:

Studio:
SEE BELOW

Tried both .matches() and Matches activity.

I know some regex just dont “transfer correctly”, like how I need to use \s instead of \n for newlines in studio. From looking online there seems to be plenty of people with similar issues since 2020.

How can I solve this?
Isn’t there a resource from UiPath explaining this?

• Thanks

[rpadev77]

Studio:

[supermanPunch (Arpan)]

@rpadev77

(?<=Delito Pena Principal Pena\s\s\d ).+

Hi @rpadev77 ,

Maybe you could check with the below Regex :

(?<=Delito Pena Principal Pena\s+\d\s).+

[rpadev77]

@supermanPunch

(?<=Delito Pena Principal Pena\s+\d\s).+

Great that worked.
Can you explain the disconnect? Was UiPath automatically removing a line?

[supermanPunch (Arpan)]

@rpadev77 ,

Noticed you have used \s\s - This accounts for two spaces only, whereas we have a newline (2) present in the data.

The newline can also be replicated by \s+ - One or more number of spaces, Hence the replacement.

However, Even with your regex, I was able to get the output. Could you let us know what was the configuration in Matches Activity if you have used it ? Was it done like below :

Was the Multiline option selected ?

[rpadev77]

Ah no I didnt have the Multiline option. I saw the 2 lines when pasting the output but not in the output itself. I’ll uttilize the properties panel or regex.matches.() instead of the Config Wizard here on out.

I cant seem to get \n to recognize newlines in UiPath and have been using /s as a workaround. I see how /s**+** quantifier was need since \s is for spaces.

Would you recommend a better way to identify newlines in studio (\n doesnt seem to work and I dont have a specific use case atm) or stick to \s+

[supermanPunch (Arpan)]

@rpadev77

(\n doesnt seem to work and I dont have a specific use case atm) or stick to \s+

@rpadev77 ,

It is sometimes a carriage return as well, so we use options - \r?\n, \r\n, \r?\n?

[rpadev77]

I see…
\s for spaces
\n for newlines
\r for carridge returns

with a combination of quantifiers:
? zero or one

• as many as possible

Thank you for the help.

[rpadev77]

(“plus sign”) as many as possible

[Steven_McKeering]

Hello @rpadev77

Sounds like you are on the right path and have a solution from the great @supermanPunch

The only thing I would add is, if you are having trouble with ’new lines’ in regex than try adding this: [\r\n]+

Feel free to take a look at my Regex MegaPost (if you haven’t seen it already)

Regex help tutorial MEGAPOST – Making your first Regex post, Reusable Regex Patterns, Regex Troubleshooting, Sample Workflow and more

THE PURPOSE OF THIS POST IS TO HELP NEW REGEX USERS If you need help with Regex be sure to provide in your post, a Sample, the Output and the Pattern (as much as you know). CONTENTS: Section : I need a Regex Pattern ASAP! - My first Regex Post Section : Regex samples that you can use! Section : I need help applying regex in UiPath Section : Regex Matches and Groups Section : Le…

Cheers

Steve