In-app link to the review page when the app isn't deployed yet

In-app link to the review page when the app isn't deployed yet

I have an app I'm about to deploy. With help of some earlier SO questions
I ended up with this URL, which correctly works in the app to activate
itunes on the 'Review' page of Bloons TD 5 (randomly picked as a test):
NSUrl("itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=563718995&onlyLatestVersion=true&pageNumber=0&sortOrdering=1&type=Purple+Software");
My app isn't yet released, but the 'link' page on my (setup but not yet
uploaded) app page is this:
https://itunes.apple.com/us/app/geometry-caddy-easy-shape/id685851272?ls=1&mt=8
Transplanting my ID into it like the below gives me a 'newnullresponse'
error instead of a page.
NSUrl("itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=685851272&onlyLatestVersion=true&pageNumber=0&sortOrdering=1&type=Purple+Software");
I tried it with and without leaving the 'id' prefix in.
Can I be confident in uploading my app that this link will start working
once the app is live on the store?