title: sum tow numbers from different sheet via google app scripts
body: <p>i use this code</p>
  
  <p><code>function sumValue(){
   return "=Sum(Sheet1!f8,Sheet5!C1)"; 
  }
  </code>
  to add to number from sheet1 and sheet5. but i want to remain that sum result to the same cell(Sheet5!C1) how can this code be edited.</p>