求助vb编程

Dim rs2 As New ADODB.Recordset
Set rs2.ActiveConnection = cnn
rs2.CursorType = adOpenStatic
sqlstring2 = "select * FROM 到达时刻 where '廊坊站'"
rs2.Open sqlstring2
Dim dd(1 To 14) As Date      '建立存放到达时刻的数组
For i = 1 To 14
  dd(i) = rs2.Fields("廊坊站")
  rs2.MoveNext
Next                      '廊坊站的到达时刻存入数组


For m = 1 To 13
   For n = m + 1 To 14
   If dd(m) > dd(n) Then
      t = dd(m)
      dd(m) = dd(n)
      dd(n) = t
   End If
   Next
Next                    '将到达时刻排序

Dim rs3 As New ADODB.Recordset
Set rs3.ActiveConnection = cnn
rs3.CursorType = adOpenStatic
rs3.Open "select 车次 from 到达时刻 where 廊坊站 = dd(1)"      '有问题   说是dd无函数定义
checi = rs3("车次").Value
这是我写的代码  但是执行时总是说dd函数无定义  我明明定义dd是一个数组并且赋值了啊？？我只是想查询对应时刻的车次   求助各位大神？？？？