Unfortunately, this method doesn't allow for any other useful Regular Expression functionality. Therefore, while it may be useful in matching a simple string within a property/reference name, it cannot do more complex matching functionality that can be achieved with current standard ECMAScript RegEx, such as:
$ where name=/\b(bar)\b/i
or
$ where name=/\b(?i:bar)\b/
either of these would match "bar", "Bar", or "BAR", but would not match "barrier", "Barn", "embarassed", or "FUBAR".
Furthermore, the WAQL Reference documentation states "ECMAScript regular expressions are used". This is inaccurate as modern ECMAScript allows for several modifiers by default (using the syntax in my examples above) including global (g), multiline (m), and ignoreCase (i). The documentation should be updated to include the differences between the standard ECMAScript RegEx, and the modified version of it that is used in Wwise.
Or, even better yet, Wwise should be updated to support the use of these modifiers, primarily the ignoreCase modifier.