Google Apps Triggers

You set up a trigger in a spreadsheet by going to the menu Tools -> Script Editor in the spreadsheet. This opens a new script editing window. Copy the code below into the Code.gs tab, replacing the values of the variables in the top 3 lines (dataset_name_or_id, api_key, prod_or_test which can be PROD or TEST depending upon the server you want to update). Then go to the Resources menu and select Current Project's Triggers. Click on the link which says "No triggers set up. Click here to add one now." and set it up as follows using the dropdown menus:

Run: doOnEdit

Events: From Spreadsheet | On edit

Click notifications and from the Execution failure notifications dropdowns, choose the email you want to use and set when to notify as "immediately".

For Google Apps triggers (eg. in Google spreadsheet), please create them with the user hdx.gapps.triggers@gmail.com from Logins.

The reason is that it is not possible to see another person's triggers so multiple people could mistakenly create the same trigger on a spreadsheet.

Note that the hdx.gapps.triggers@gmail.com user only needs read access to the spreadsheet for the purposes of the trigger. Write access is only needed for adding the code for the trigger to the Script Editor (which can be completed with a different user). If the hdx.gapps.triggers@gmail.com user only has read access, you will not be able to open the Script Editor from the spreadsheet, you will need the direct url (which you can get by opening from the spreadsheet with another user that does have write access).