■Overview
When the specified date and time arrive, the flow bot will be activated to retrieve the value of the last row in a Google Spreadsheet and notify Slack.
There is no need for complex GAS operations; by pre-retrieving the value of the last row with a function, you can easily obtain the last row's value and perform notifications, etc.
The function to retrieve the last row's value in Google Spreadsheet can be found here
The actual operation when the flow bot is activated can be seen at https://youtu.be/gyf3eRKJDb4