How do I make many object move when I click a GUI button? I want the objects move upward.

Assume you have a list of gameObjects, assume C# and upward is Y

 OnGUI () {
 // if button is pressed, do something:
 if (GUI.Button(new Rect(x,y,w,h),"ClickMe")) {
 doSomething() 
 }
 }

 private void doSomething() {
  for(loop through GameObject list) {
 
  Vector3 newPos = myList[loop_index].gameobject.transform.position;
  myList[loop_index].gameObject.transform.position = new Vector3 (newPos, newPos+10, newpos);
 
 }
 }