Loop not running

Im not getting this loop to execute completely:

For i = cumlastrow2 To cumlastrow Step -1
Worksheets("CUMPROP").Cells(i, 2) = "8"
Next

Can I change the code so that perhaps there isnt a loop.

Many Thanks

For i = cumlastrow2 To cumlastrow Step -1
Worksheets("CUMPROP").Cells(i, 2) = "8"
Next i

Hi, thanks for the tip but is still not executing.
Think I definitely need a replacement for the loop

thanks