I have a script that when passed the Invoice number and line sequence number for a grouped invoice it returns the line description for the line on the invoice - not available for grouped invoices. I am told that the code

<#import 'https://........&invNumber=######&line=#' as mydescription>

is how to reference this script. I am getting a "Error when accessing template at URL" error on saving. If I paste that URL into a browser I do get the correct result. Any ideas