How do I get an instantiated button to active/de-active a gameobject

I'm instantiating a button from a prefab. This works great but when I try to get the button to activate or de-activate a gameobject when it's clicked nothing happens. I know this is because of my reference to the gameobject to be activated or de-activated is getting set to null. My problem is that I can't get GameObject.Find() to locate the actual gameobject. The gameobject is a UI panel. Here's my code:

 public void BtnPrefabPress ()
 {
     csPanel = GameObject.Find("Campaign Setup Panel");
     cPanel = GameObject.Find("Campaign Panel");
     for(int i = 0; i < SaveLoad.savedGames.Count; i++)
     {
         if(campaignNameText.GetComponent<Text>().text.CompareTo(SaveLoad.savedGames[i].campaign.cName) == 0)
         {
             currentGame = SaveLoad.savedGames[i];
             index = i;
         }
     }
     
     if(currentGame.campaign.finishedSetup)
     {
         csPanel.SetActive(false);
         
         //add saved info to campaign panel for display
         cPanel .SetActive(true);        
     }
     else
         csPanel.SetActive(true);
 }