Google sheets script multiple range and multiple conditional - google-sheets

Question

I have a spreadsheet, in which I need the script to fetch, over two columns, two pieces of information. And when that's true, I add a formula that adds "1 day" into a third column.
I can make the conditionals run individually. But when I put both, they don't work.
function fillColADia() {
var s = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Afazeres');
var dataA = s.getRange("H1:H").getValues();
var dataB = s.getRange("A1:A").getValues();
for(var i=0; i<dataA.length; i++) {
for(var j=0; j<dataB.lenght; j++) {
if (dataB[j][0] == false) {
if (dataA[i][0] == 'Zenon') {
s.getRange(i+1,3).setValue("+1");
}
}
}
}
}
And I also don't know how to add the "add 1 day" formula to the end.
Thanks a lot for the help.
COPY FILE with dummy data

Answer 1

Faaala! Something along these lines as food for thought!
...although I'm certain there are more performant ways to accomplish it:
function fillColADia() {
var s = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Page1');
var data = s.getRange("A1:H").getValues();
for (var a = 0; a < data.length; a++) {//Percorre cada linha do intervalo
if (data[a][0] == false && data[a][7] == 'Zenon') {//Aplica critérios
let date = data[a][2];//Pega a data daquela linha
date1 = Utilities.formatDate(addDays(new Date(date), 1), Session.getTimeZone(), "dd/MM/yyyy");//Formata o objeto data, usando a função abaixo para incrementar o dia
date2 = Utilities.formatDate(addDays(new Date(date), 1), Session.getTimeZone(), "dd/MM/yyyy HH:mmss");
s.getRange(a + 1, 3).setValue(date1);//Põe a data de volta
s.getRange(a + 1, 4).setValue(date2);//Põe a data de volta
}
}
}
//GERA DATAS INCREMENTANDO OS DIAS
function addDays(date, days) {
var result = new Date(date);
result.setDate(result.getDate() + days);
return result;
}