Google Apps Script: Access Google Sheets, Maps & Gmail in 4 Lines of CodeGo to Lab
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Very fun and interesting
You have missed an instruction to update: in the Edit/replace (teamlate) code and saving section step one says "In the code below, replace <YOUR_EMAIL> with an email address you can access." but then this is repeated in step 2 with incorrect instructions "Of course, we need to replace the fake email address (*email@example.com*) with one of yours that you can access during this lab"
Nice explanation of the code lines in the end.