I published a survey index layer on my web app and would like to link the survey documents as pdfs.
Can I do this through web app builder?
If so can it be an internal server link, or does it have to be a web link?
Do the pdfs have to be stored in my arc gis online account?
I have about 1200 surveys.
This is what my map looks like, I want it to link to the document number in the pop up window.

The county next door has their surveys linked on their web app, but they are using a paid service to create the links an we don't have a budget to do that.
When you click view document it opens the pdf

Thank you!