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I am trying to use an array in Google Forms Response sheet for a time sheet. I want to have a rolling 30 day total for hours worked. The first 30 days is not able to lookup 30days prior. 

={"Previous-Duty Hours 30D prior";ArrayFormula(VLOOKUP(($B2-30),$B2:$F,5, FALSE))}

The result is Error:

Did not find value '43523' in VLOOKUP evaluation.

How do I ignore the first 30days? I also want to array =SUM(I2+H3) but the first row =F2. How do I manage the first row?

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  • pls, share a copy of your sheet
    – user0
    Commented Apr 4, 2019 at 0:30
  • what is the easiest way share the sheet? docs.google.com/spreadsheets/d/…
    – heli.s
    Commented Apr 4, 2019 at 0:37
  • copy paste link of your sheet here and enable view in sharing
    – user0
    Commented Apr 4, 2019 at 0:38

1 Answer 1

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  • your formula should probably be:

    ={"Previous-Duty Hours 30D prior"; 
  ARRAYFORMULA(IFERROR(VLOOKUP((B2:B-30), B2:F, 5, 0)))}

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  • Thanks very much. Your formula works a treat. I am sorting on Column B. I will need to seek some assistance on filling down in column G and onwards as my mojo with formula's seems to have departed. Really appreciate your assistance.
    – heli.s
    Commented Apr 8, 2019 at 1:24

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