If / ElseIf within For Each?

[pwells]

Hey guys, I'm looking to put a few if/elseif conditions within a for each loop. Is this possible/ any suggestions as to how I can get it to work?

Sub rating()

Dim terr As Integer

For Each mycell In Sheets("Orig File").Range("p8:p999999")
    If mycell.Value = "a" Then
        mycell.Value = 1
    ElseIf mycell.Value = "b" Then
        mycell.Value = 2

Next mycell

End sub

Thanks for the help!