Google Apps Scripts - Automate a Google Sheets => Google Docs process

Use the script here: [login to view URL] and extend it to automate the capture of the variables from the 'item posts' sheet here: [login to view URL] and put them into a new copy of the template here: [login to view URL] I've already started the modification of the script here: [login to view URL] but got stuck when it started throwing errors up, and I don't have time to troubleshoot. I want to be able to select only single lines in the sheet, so there will be a step at the start where by I am asked which item description I want to create a document for and I will have to give it the spreadsheet row reference. I also want to be able to give it a link to a google photos album, and have it create the embed code, by copying the process here: [login to view URL] - i.e. use the embed code as per the comment here: [login to view URL] More on Google Apps Script here: [login to view URL]