Get value from formula cell to trigger email sending - google-apps-script

Question

I am trying to get an e-mail to be sent when the value in a cell that contains a formula goes below a certain number.
I have achieved this for various other spreadsheets that have the cell value manually entered, but for this specific one sheet where the value on the cell results from a simple SUM formula, the e-mail is not being sent. Now if I enter the value manually into the cell, the e-mail is sent right away.
Below is the code and here is a copy of my spreadsheet:
https://docs.google.com/spreadsheets/d/1gnmJfkmIKHyNqLqTFK-bdOZnh2Ejkia6xo3r_3cjwkk/edit?usp=sharing
function CheckBasketsInventory(e) {
var ss = e.source;
var inventorySheet = ss.getSheetByName("Baskets");
var rowIndex = e.range.getRow();
var columnIndex = e.range.getColumn();
var numCols = 11;
var row = inventorySheet.getRange(rowIndex, 1, 1, numCols).getValues()[0];
var editedInventory = row[10];
var editedMinimum = row[8];
var sheetName = ss.getActiveSheet().getName();
// Checking that: (1) edited cell is an inventory quantity, and (2) Inventory is below minimum
if(editedInventory <= editedMinimum && sheetName == "Baskets" && columnIndex == 11 && rowIndex > 1) {
var inventoryValues = inventorySheet.getDataRange().getValues();
var emailBody = "";
for(var i = 1; i < inventoryValues.length; i++) {
var inventory = inventoryValues[i][10];
var minimum = inventoryValues[i][8];
if(inventory <= minimum) {
var productName = inventoryValues[i][0] + " " + inventoryValues[i][1] + " " + inventoryValues[i][2];
var productUnits = minimum + " " + inventoryValues[i][9];
var messagePart1 = "Inventory for " + productName + " has gone under " + productUnits + ". ";
var messagePart2 = "Organise purchase order. Inventory as of today is: " + inventory + " " + inventoryValues[i][9];
var message = messagePart1.concat(messagePart2);
var newItem = "<p>".concat(message, "</p>");
emailBody += newItem;
}
}
var emailSubject = "Low inventory alert";
var emailAddress = "danielrzg#gmail.com";
// Send Alert Email
if(emailBody != "") {
MailApp.sendEmail({
to: emailAddress,
subject: emailSubject,
htmlBody: emailBody
});
}
}
}
Thank you.

Answer 1

As you can see in the documentation:
Script executions and API requests do not cause triggers to run. For
example, calling FormResponse.submit() to submit a new form response
does not cause the form's submit trigger to run.
This includes values edited by a Sheet Formula not triggering an onEdit trigger.