Data validation Script loop

Question

I have a code to create a data validation on a cell from a range next to it.

example:

var cellC4 = cell.getRange('F11');
var range = SpreadsheetApp.getActive().getRange('MAIN!AG11:AG11');
var rule = SpreadsheetApp.newDataValidation().requireValueInRange(range).build();
cellC4.setDataValidation(rule);

var cellC5 = cell.getRange('F12');
var range = SpreadsheetApp.getActive().getRange('MAIN!AG12:AG12');
var rule = SpreadsheetApp.newDataValidation().requireValueInRange(range).build();
cellC5.setDataValidation(rule);

var cellC6 = cell.getRange('F13');
var range = SpreadsheetApp.getActive().getRange('MAIN!AG13:AG13');
var rule = SpreadsheetApp.newDataValidation().requireValueInRange(range).build();
cellC6.setDataValidation(rule);

var cellC7 = cell.getRange('F14');
var range = SpreadsheetApp.getActive().getRange('MAIN!AG14:AG14');
var rule = SpreadsheetApp.newDataValidation().requireValueInRange(range).build();
cellC7.setDataValidation(rule);

can someone help me do it correctly

Im stuck here:

function onOpen(){

var ss0 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('MAIN');  
var EndRow = ss0.getLastRow();

for ( var c = 16;c <= 25; c) {
for ( var i = 11;i <= EndRow; i++ ) {


//►PO# VALIDATION►

var range1 = ss0.getRange(i, c);
var rule1 = SpreadsheetApp.newDataValidation().requireValueInRange(range1).build();
ss0.getRange(i, 5).setDataValidation(rule1);
}}}

Answer 1

Findings:

• Your looping for this part for ( var c = 16;c <= 25; c) { has a wrong iteration with c instead of using c++. Thus, this looping will never finish running.

SUGGESTION:

==UPDATE===

You can try this sample script below:

function onOpen(){
  var ss0 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('MAIN');  
  var EndRow = ss0.getLastRow();
  for(row=11; row<=EndRow; row++){
    var data = ss0.getRange("P"+row+":Y"+row).getDisplayValues();
    var rule = SpreadsheetApp.newDataValidation().requireValueInList(data[0]).build();
    ss0.getRange(row,5).setDataValidation(rule);
  }
}

Sample:

Result on column 5 or column E after the onOpen() function finishes running