How to setup the ROW number as a VARIABLE within a RANGE

This is part of my code here:

    Dim ord As Range
    Dim pub As Range
    Dim prid As Variant
    Set xyz = Rows(13)
    Set ord = Sheets("Image Catalog").Range(xyz, ("AA:AF"))
    Set pub = Sheets("Image Catalog").Range(xyz, ("AD"))
    Set prid = Sheets("Image Catalog").Range(xyz, ("AC"))

I want the ROW NUMBER to be referenced as "xyz" in my code.
But DEBUG error comes up and highlights THIS portion when the MACRO is run.

    Set pub = Sheets("Image Catalog").Range(xyz, ("AD"))

I think it's because THIS part is written wrong:

    Range(xyz, ("AD"))

I don't know how to correct it!

Thanks!