What is the correct form for a random string using a regular expression in Tosca?

• A. {RANDOMTEXT["RegEx"]}
• B. {RANDOMREGEX["Pattern"]}
• C. {RANDOMREGEX["Regular expression"]}
• D. {RANDOMREGEX[Regular expression]}

Answer: (C)

Generating a random string that follows a specific pattern in Tosca uses the RANDOMREGEX function with the pattern supplied as a string. The correct form is to call RANDOMREGEX and pass the regular expression inside quotes as the argument, inside braces: {RANDOMREGEX["Regular expression"]}. This tells Tosca to produce a string that matches the provided regex. Using a different function like RANDOMTEXT would produce arbitrary text without a guaranteed pattern, and omitting quotes or using an unquoted word wouldn’t be valid for passing the regex as a string. Providing a non-string or an incorrect label inside the argument wouldn’t be parsed as a regex pattern.