TrackLink and subscriber_id={{ .Subscriber.UUID }}

[systems368]

I'll start by saying I love the product, nice, clean and very easy to use.

I want to combine TrackLink and subscriber_id={{ .Subscriber.UUID }} in my url - such as this

Watch Video

I've tried many variations:
Watch Video
On preview { "message": "Error rendering message: template: content:99:95: executing "content" at \u003C.Subscriber.UUID\u003E: wrong type for value; expected *manager.CampaignMessage; got string"}

Watch Video
On preview { "message": "Error rendering message: template: content:99:112: executing "content" at \u003C"Watch Video"\u003E: can't handle "Watch Video" for arg of type *manager.CampaignMessage"}

<a href="{{ TrackLink (printf "https://www.foqus247.com.au/charter-demo-one?subscriber_id=%s\" .Subscriber.UUID) "Watch Video" }}"
class="button-dark" title="Watch Video">Watch Video
On Compile { "message": "Error compiling template: error compiling message: template: content:99: unexpected "\\" in operand"}

If I manage to get it to compile it won't preview or if I get it to compile and preview, it doesn't track. I really want it to track the click on
https://www.foqus247.com.au/charter-demo-one and then append the subscriber_id={{ .Subscriber.UUID }} after.

Does anyone know if this is at all possible within the standard framework of Listmonk?