Trigger script onEdit event from App

I go step by step by testing the code sent.

the ligne 8 is :"var targetSheet = app.getActiveSpreadsheet().getSheetByName(“Suivi”);

"SyntaxError: Invalid or unexpected token (ligne 8, fichier “Focus.gs”)"

I don’t understand what could be the problème
1 function traitement(e)
2 {
3 Logger.log(‘change’);
4 var sheet = spreadsheet.getActiveSheet();
5 var app = SpreadsheetApp;
6 var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
7
8 var targetSheet = app.getActiveSpreadsheet().getSheetByName(“Suivi”);

}

![Capture d’écran 2020-04-30 à 15.29.45|690x239](upload://o7OqlAEicLAJsCXHX2M2ayNJ5I9.png)

Thank you