In the Panel your EditText views have an index.
If you add EditText1, EditText2, EditText3 ... and so on.
EditText1 has index 0, EditText2 has index 1, EditText3 has index 2, ... and so on
So if you want to set the text "99" to EditText45:
Dim edt As EditText
edt = Panel1.GetView(44)
edt.Text = "99"