excel - For Each cell in Range cannot bring to another Sub?

When using For Each cell in Range, I would like to use the cell.row property to refer to the row of the current cell. However if I use it in another Sub, I get the error Run-time error:'424' Object required.

Below is a simple code to illustrate what I mean. Am I doing anything wrong or is there a way to refer to the row of the current cell in another Sub? Thanks!

Sub CommandButton2_Click()

 Dim rng As Range
 Set rng = Range("P290:P293")

 For Each cell In rng
  Third
 Next cell

End Sub

Sub Third()

 MsgBox cell.row

End Sub