Using Custom Tags with Email verification rule

Hello,

I would like to use custom tags to pass some extra data whenever a user updates their email, however whenever I supply custom tags with the .AddOrUpdateContactEmail call the user is no longer sent the verification email, i.e; the email verification rule for this call doesn't trigger.

It works without the custom tags, so I know the smtp details are correct and my code works, but its integral that I can pass various extra parameters so I know precisely which users are verifying their email addresses.

Here is my rule and my code:

var request = new AddOrUpdateContactEmailRequest()
        {
            EmailAddress = inEmail,
            CustomTags = new Dictionary<string, string>() { { "EmailVerificationTestRule", "Testing" } }
        };
        PlayFabClientAPI.AddOrUpdateContactEmail(request, updatedContactEmail, failedUpdateContactEmail);