Google reCAPCHA v3 URL construction

[macrobber]

Good morning all,
I am working on setting up a google recaptcha v3 on our site. I am passing the token to a landing page (and it's showing up in the output; however, I need to append this token to a URL request. When I do a simple concatenation, the secret key shows up - but the token does not. Additionally, when I output the full URL (see below) it results in '0'. Is this an issue of needing to urlencode the token? Has anyone successfully used v3 of recaptcha?

Recaptcha token passed = &mvta:global:g-recaptcha-response; <br>

<mvt:assign name="g.recaptcha_url" value="'https://www.google.com/recaptcha/api/siteverify?secret=[mySecret]&response='"/>
<mvt:assign name="g.newrecaptcha_url" value="g.recaptcha_url $ g.g-recaptcha-response"/>
<br><br>
The recaptcha URL is: &mvt:global:recaptcha_url; <br><br>
The NEW recaptcha URL is: &mvt:global:newrecaptcha_url; <br><br>


<mvt:call action="g.newrecaptcha_url" method="'RAW'" content-type="'application/json'">
    <mvt:assign name="l.settings:jsonRecapcha" value="l.settings:json $ s.callvalue" />
    jsonRecapcha = &mvt:jsonRecapcha;<br>
</mvt:call>

[dcarver]

You probably need to escape the "-" signs in g.g-recaptcha-response. Right now the engine is probably thinking you are trying to do g.g minus unscoped recaptcha minus unscoped response which gives you 0. Try something like "g.g\-recaptcha\-response.