Unchanged Cell after filling a condition in google spreadsheet - google-sheets

Question

I want to create a conditional cell formation.
Say Column B has a value that is a live score:
In Column C, I want to create an if condition, like this:
if B>10, then C is YES.
However, as I mentioned, B column as live score, even if B falls below 10 afterward, I want C to remain unchanged. So essentially, I want C to remain at yes, once my live score condition hits.
Please let me know how to do it.

Answer 1

You can use the Apps Script editor with the code below:
function liveScorePass(){
var spreadsheet = SpreadsheetApp.getActiveSheet();
var i = 0;
Logger.log(i);
while (i == 0){
Logger.log('B1');
if (spreadsheet.getRange('B1').getValue() > 10){
spreadsheet.getRange('C1').setValue("YES");
Logger.log('C1');
i = 1;
}
else{
spreadsheet.getRange('C1').setValue("NO");
}
}
}
/* OPTIONAL FUNCTION*/
function onOpen(){
var ui = SpreadsheetApp.getUi();
// Or DocumentApp or FormApp.
ui.createMenu('Live Score Menu')
.addItem('Reset Script', 'liveScorePass') //creates a menu to start the script again
.addToUi();
var spreadsheet = SpreadsheetApp.getActiveSheet();
liveScorePass(); //starts the script whenever you open the spreadsheet.
}
It basically checks if your cell B1 is greater than 10. If it's not, the script keeps running indefinetly, but when it is, the value of C1 is set to YES and i is set to 1, breaking away from thw while loop, no longer changing the value of C1 independent of the value of B1.
Edit
To use it as a function rather than a tab on the toolbar menu, you can just call it as if it were a formula =LIVESCOREPASS(). However, this implicates three things:
You can't use any set*() methods, so you need to adapt you coding, leaving you with this:
function LIVESCOREPASS(){
var spreadsheet = SpreadsheetApp.getActiveSheet();
var i = 0;
Logger.log(i);
while (i == 0){
Logger.log('B1');
if (spreadsheet.getRange('B1').getValue() > 10){
var result1 = "YES";
Logger.log('C1');
i = 1;
return result1;
}
else{
var result2 = "NO";
return result2;
}
}
}
It won't allow changes in arbitrary cells other than the one you're using or its adjacents (not a problem here);
Every time you update your referenced cell (B1), the function is reset, so you'll lose the fix "YES" if it drops to 10 or below.
Here you can find the documentation on Custom Functions.