Replace everything before or just get login id?

yes, with a slash it's little tricky

try following

replace(userProfileLookup(ctrlRequestor,"AccountName"),"^[^\\]*\\","")‍

Thanks!    Why are 4 slashes required?   I understand why 2 would be needed.   But 4?

This is actually  easier and it works.   No replace needed.

userProfileLookup(ctrlRequestor,"UserName")

since special meaning of backslash needs to be escaped twice - once for javascript and second time for regular expression

Hi Bruce,

I have to extract the login ids in a workflow. For Example I have two login ids separated by comma in a variable (DOMAINLoginID123,DOMAINLoginID123).  I know how to extract single login id using the action regular expression in workflow. But I am unable to extract the two login ids. I tried using action 'for each' but its returning an error. 

Any advice is really appreciated.

Thanks in advance!!