Runtime Click Listener Addition

Basically I used following code to add button click listener to my list of buttons.

     private void LoadCurrenWeekPicks ()
     {
         foreach (ReportPick reportPick in ListCollection.currentWeekPickList) {
 
             GameObject reportPickObj = Instantiate (reportPickPref) as GameObject;
             reportPickObj.transform.SetParent (reportPickContainer);
             reportPickObj.transform.localScale = Vector3.one;
 
             DayReport dayReport = reportPickObj.GetComponent<DayReport> ();
             dayReport.UpdateDayNameText (reportPick.DayName);
             dayReport.UpdateDateText (reportPick.Date);
             dayReport.UpdateTotalTipsText (reportPick.TotalPicks);
             dayReport.UpdateWinPickText (reportPick.TotalWin);
             dayReport.UpdateLossPickText (reportPick.TotalLoss);
             dayReport.UpdatePercentagePickText (reportPick.WinningPercentage);
 
             Debug.Log("report date : " + reportPick.Date);
             reportPickObj.GetComponent<Button> ().onClick.AddListener (delegate {
 //                mainMenuController.OnPaidPickButtonClick (paidPickObj);
                 reportController.OnReportParticularDayButtonClick(reportPick.DayName);
             });
 
         }
     }

In this I want to add button click listener method call as well pass day name string argument. But in this I am facing just one problem. I was always getting last entry of day name when I print passed day name in method call.

 public void OnReportParticularDayButtonClick (string selectedName)
     {
 //        selectedDate = "12/04/2016";
 //        selectedDate.Replace ('-', '/');
         Debug.Log("selected date : " + selectedName);
 //        Debug.Log ("Report : " + Convert.ToDateTime (selectedDate));
     }

I am not getting as object(button) is attached with day name. I am always getting last day name entry in all click events. Please give me some hint in this.