Hi @gwshaw,
I suspect that you may have run into trouble because of the syntax you’re using for your Regular Expression. It looks like you’re using the Perl syntax but Tyk is written in Go and so uses the Go syntax to handle pattern matching which is slightly different (for instance, it isn’t possible to use w+ expression in Go and you typically have to use something like [A-Za-z0-9_-]+ instead).
Anyway, I hope that helps. Let me know if you have any further questions.
Kind regards,
Jess @ Tyk