How can i add persistent listeners to a Button.onClick

So what i'm doing is spawning a new button for a dialogue system i'm working on. And when i spawn that button i was to add an OnClick event to do what i wan't so basically i wan't to go from this:



To this:


This is the code i have at the moment:

Code (csharp):

1.  
2. Button temp = buttons[i].GetComponent<Button>();
3.  
4.             // Set Button on click definition
5.             System.Type[] argument = new System.Type[1];
6.             argument[0] = typeof(int);
7.             targetInfo = UnityEvent.GetValidMethodInfo(this, "LoadNode", argument);
8.             UnityAction methodDelegate = System.Delegate.CreateDelegate(typeof(UnityAction), this, targetInfo) as UnityAction;
9.             UnityEventTools.AddPersistentListener(temp.onClick, methodDelegate);
10.  

What am i doing wrong?