Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below:   https://experienceleague.adobe.com/docs/analytics/analyze/ad-hoc-analysis/c-reports-paths.html?lang=en#ad-hoc-analysis  

You would need to suggest this on the Analytics ideas exchange.

Answer provided in original  post EDIT: I've just answered my own question, the evar is working correctly but i'm only setting the metric for one of the statuses (the final status) which is the only one that's showing. I was under the impression that the evar would be tied back to the application c...

Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below: https://www.adobe.io/apis/experiencecloud/analytics/docs.html#!AdobeDocs/analytics-2.0-apis/master/reporting-guide.md  

Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below: https://experienceleague.adobe.com/docs/analytics/components/marketing-channels/c-getting-started-mchannel.html?lang=en#marketing-channels

Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below:   https://experienceleague.adobe.com/docs/mobile-services/android/analytics-android/analytics-main.html?lang=en#new-adobe-experience-platform-mobile-sdk-re...

Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below:   https://experienceleague.adobe.com/docs/analytics/import/data-sources/data-types-and-categories/datasrc-transactionid.html?lang=en#data-sources

Since this is an older post, I'm assuming you've solved this issue. If not, please contact customer care so we can get more information.

Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below:   https://experienceleague.adobe.com/docs/analytics/import/data-sources/data-types-and-categories/datasrc-transactionid.html?lang=en#data-sources  

Since this is an older post, I'm assuming you've solved this issue. Incase others find this post, I'll post the link to the documentation below:   https://experienceleague.adobe.com/docs/analytics/implementation/use-cases/email-external.html?lang=en#use-cases