Excel 2010 :: Use One Set Statement To Set Second Statement?

I am attempting to use a previously Set variable as part of the next Set statement, pretty unsuccessfully at present.

My purpose is trying to look up

Code:
tb_SelJobID.Value

from a userform in Col Z then look across the row to Cols D,I,N,S & W (different types of work) to see if

Code:
TbSelYr.Value

matches the year selected then insert a formula in the row to the left. Then loop down to the FinalRow.

Currently my Set Found1 statement does not recognise my Found10 value. I know it will be my syntax as it always is. I have cut down the following code to display where the problem areas are, Found1 thru 5.

Code:

Sub CmdGo3_Click()
Dim Row As Range
Dim FinalRow As Long
Dim Found1, Found2, Found3, Found4, Found5, Found10 As Range
Application.ScreenUpdating = False

[code]....

Windows 7 with Excel 2010