It would be helpful to be able to provide a regular expression (like Labview Match Pattern) as a string value test limit. We often look for a pattern of data within a string rather than a constant.
Maybe also a regular expression function within the built in functions within TestStand expressions would be a help also. This could provide more flexibility if a user needs it. For example adding option to gain match position, and match length as well as give the option to search in reverse and ignore case.