Overwrite a boolean value from core data

[timswift]

In my swift code below the goal is to overwrite the second boolean value. The code below is fetching a boolean value and this code works and maybe it can be used to help overwrite the 2nd boolean value. I also attached a diagram if that helps and a photo of my core data attributes.

  func getBool(imageNo:Int) {
       // first check the array bounds
       let info = helpBool.shareInstance.fetchBool()
       if info.count > imageNo {
           // if info[imageNo].bool {
               if info[imageNo].bool == true {
                   .normal);
                   print("it is inside true")
               }
             
               if info[imageNo].bool == false {
                   print("it is inside false")
                
               }
        // }
        }
    }