访问VBa-在Excel列中循环

我在从Access循环遍历Excel文件时遇到麻烦。这是我的代码：

     Sub Xceltest()

        Dim XcelApp As Object
        Dim XcelBook As Excel.Workbook
        Dim x, i
        Set XcelApp = CreateObject("Excel.Application")
        XcelApp.ScreenUpdating = False

Set XcelBook = XcelApp.Workbooks.Open("C:\Users\Lucky\Desktop\Test\Sample.xlsx")

   With XcelBook

i = XcelApp.Rows(1).Find(What:="Število", LookIn:=xlValues, Lookat:=xlWhole).Column

x = XcelApp.Range(XcelApp.Cells(1, i), XcelApp.Cells(XcelApp.Rows.Count, i).End(xlUp)).Value

        For i = 2 To UBound(x)
            If Not IsNumeric(x(i, 1)) Then

            ExcelApp.Quit
            Set ExcelApp = Nothing
            MsgBox "This Excel file is not valid"
        : Exit Sub

            End If

        Next i

        End With

        XcelApp.Quit
        XcelApp = Nothing

        End Sub

无论我做什么，我总是在这行中得到一个错误：

i = XcelApp.Rows(1).Find(What:="Število", LookIn:=xlValues, Lookat:=xlWhole).Column

或这一个：

 For i = 2 To UBound(x)

错误是“对象不支持此属性或方法”或“对象变量或未设置块变量”。我该如何解决这个问题，有人知道吗？