How to include a variable in Regex(matches) Pattern?

[Dandan]

Hi,
I am trying to extract timespan, such as hours, after certain dates. These dates are results from another Matches Activity so they are stored in a variable, namely, DateVariable.

I’ve come up with the following Pattern but it doesn’t work. Can anyone help me figure out why and how to fix it?

Patterns:
(?<=(("+DateVariable+").*))(\d{1,2}H)

Thanks in Advance.

[RobertD (Docan Robert)]

You can try something like
New Regex("(?<="+DateVariable+").*(\d{1,2}H)").Match(test).Groups(1).Value

[Divyashreem (Divyashree Muddagangaiah)]

check this

How to Insert a user defined variable inside Regular expression

HI, I have a Variable which contains a string. I need to use this variable inside regular expression , so that it will search for that string in the text given as input In the below screen shot, Input1 is the variable which has a string “abcd”. If i run this i am not able to find that string in my text file. I tried the syntax given in https://forum.uipath.com/t/variable-in-regex-pattern/136161 but it is not working for me. [reg] Please help

[Dandan]

Thank you and sorry for not replied sooner(because of the time difference).
And also thanks to Divyashreem, I realized I made a silly mistake by putting a variable in the Regex builder instead of the pattern(property).
If put in property’s pattern, the variable can be recognized and problem solved.

[Dandan]

Thank you so much.I did made the same mistake. I wonder why I didn’t find this topic earlier, although I looked through a lot of topics before my post.