VBA - 運行時錯誤 91 很簡單嗎？

Question

簡單搜尋 ID 時出現運行時錯誤 91...為什麼？ （已解決：搜尋失敗，因為單元格格式為帶逗號的數字 - 奇怪但正確，將格式更改為“常規”並且它完美運行！謝謝你們！）

Public Sub SearchID()
      Dim foundCell As Range
      Dim searchEmpID As String
      Dim searchRange As Range
      Dim rowFound As Integer

      searchEmpID = "EmpID_0112"
      Set searchRange = Sheets("HoursData").Range("DY2:DY999")
      Sheets("HoursData").Select
      Set foundCell = searchRange.Find(What:=searchEmpID, LookIn:=xlValues, LookAt:=xlWhole, SearchDirection:=xlNext, MatchCase:=False, SearchFormat:=False)

MsgBox Sheets("HoursData").Range("DY115").Value '<<<<< 資料/ID 在那裡，請參閱螢幕截圖。

      rowFound = foundCell.Row      '<<<<<<<<<<<< Why this produces Runtime Error 91/Object Variable Not Set...???

End Sub