On "Sheet1" I have a command button to:
1) copy a range of cells on "Sheet2"
2) paste copied values back into "Sheet1"

The following set of instructions seem to work.

Private Sub CommandButton1_Click()
Sheets("sheet2").Select
Sheets("Sheet2").Range("A1:J10").Select
Selection.Copy
Sheets("Sheet1").Select
Sheets("Sheet1").Activate
Range("A1").Select
Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone,
SkipBlanks _
:=False, Transpose:=False

End Sub

The instructions below doesn't work.

Private Sub CommandButton1_Click()
Sheets("sheet2").Select
Sheets("Sheet2").Range(Cells(1, 1), Cells(10, 10)).Select 'offending line
Selection.Copy
Sheets("Sheet1").Select
Sheets("Sheet1").Activate
Range("A1").Select
Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone,
SkipBlanks _
:=False, Transpose:=False

End Sub

The offending line is the third line with ".Range(...)" in it. The second
method seems to work if I copy/paste cells from the same sheet.

I would like to use numeric values to set the range because the table of
values that I want to copy on "Sheet2" will change.