I got this code on here but need to modify it so it only sees 3 sheets.  1 is Active Tickets.   2 is Closed Tickets.  3 is Pipeline.This is the code i currently have: function onEdit(event) {var ss = SpreadsheetApp.getActiveSpreadsheet();var actSht = event.source.getActiveSheet();var actRng = event.source.getActiveRange();var index = actRng.getRowIndex();var dateCol = actSht.getLastColumn();var lastCell = actSht.getRange(index,dateCol);var date = Utilities.formatDate(new Date(), GMT-3, dd/MM/yyyy HH:mm);lastCell.setValue(date);lastCell.setComment(Ultima Modificacion:  + actRng.getA1Notation() +' por     '+Session.getActiveUser());ss.toast('Ultima Modificacion = '+ actRng.getA1Notation()+' por   '+Session.getActiveUser());}Any and all help would be much appreciated 
Need to Make this Code Sheet Name specific rather then the active sheet
google spreadsheets;google apps script
If I interpreted your question right you want your script run only if you edit a cell in  one of the three sheets you mentioned. You can use getName() on actSht to get the name of the sheet in which you have edited a cell. The you can just use an IF-statement to check if it's one of your sheets. Here's an example of what I described above:function onEdit(e) {  var sheet = SpreadsheetApp.getActiveSheet();  if (sheet.getName() == Project || sheet.getName() == Tasks){    //Some code that only runs if the cell edited is in a sheet named Projects or Tasks  }}And here's how you can apply it to your code:function onEdit(event) {    var ss = SpreadsheetApp.getActiveSpreadsheet();    var actSht = event.source.getActiveSheet();    if(actSht.getName() == Active Tickets || actSht.getName() == Closed Tickets || actSht.getName() == Pipeline){        var actRng = event.source.getActiveRange();        var index = actRng.getRowIndex();        var dateCol = actSht.getLastColumn();        var lastCell = actSht.getRange(index,dateCol);        var date = Utilities.formatDate(new Date(), GMT-3, dd/MM/yyyy HH:mm);        lastCell.setValue(date);        lastCell.setComment(Ultima Modificacion:  + actRng.getA1Notation() +' por     '+Session.getActiveUser());        ss.toast('Ultima Modificacion = '+ actRng.getA1Notation()+' por   '+Session.getActiveUser());    }}