function createDocument() {
  var headers = Sheets.Spreadsheets.Values.get('', 'A2:I2');
  var tactics = Sheets.Spreadsheets.Values.get('', 'A3:I6');
  var templateId = '';
  
  for(var i = 0; i < tactics.values.length; i++){
    
    var company = tactics.values[i][0];
    
    //Make a copy of the template file
    var documentId = DriveApp.getFileById(templateId).makeCopy().getId();
    
    //Rename the copied file
    DriveApp.getFileById(documentId).setName('Propuesta de Marketing Digital para ' + company + ' 2018');
    
    //Get the document body as a variable
    var body = DocumentApp.openById(documentId).getBody();
    
    
    //Insert the company name
    body.replaceText('##Company##', company)
        
    //Append tactics
    parseTactics(headers.values[0], tactics.values[i], body);
    
  }

}

function parseTactics(headers, tactics, body){ 
  
  for(var i = 1; i < tactics.length; i++){
    {tactics[i] != '' && 
      body.appendListItem(headers[i] + ' | ' + tactics[i] + ' netos').setGlyphType(DocumentApp.GlyphType.BULLET);
    }
    
  }
}