RegEx - global and case-sensitive modifiers

As far as I know you cannot put flags into the regex there which is kinda unfortunate, but if you're dealing with complex or larger Regular Expressions, you can always use the actual Regex Action and then just check against the variable used to capture whether or not it was successfully matched: 

However, because this case has only a few conditions to meet, I'd just use the 'contains (ignoring case)' option of the Condition or Run If action that you're evaluating your string in: 

Either way you'll get to the place you'd like to be.