LastFullWeek from Last year

I'm running a report which compares results from last week using the LastFullWeek function. However, i would like to compare the same week in last year. I have tried LastFullWeek-52 but without any luck.

***CURRENTLY***
If {SaleDate} = LastFullWeek
THEN {Transactions}

***I WOULD LIKE***
If {SaleDate} = LastFullWeek (IN THIS TIME LAST YEAR)
THEN {Transactions}


Any help is appreciated :)
m0leyAsked:
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mlmccCommented:
You can find the same week by

Dateadd ("W",-52,{SaleDate})

You can then use that in your if statement.

good luck
mlmcc
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m0leyAuthor Commented:
hi mimcc,

thx for the quick response but,

Dateadd does'nt seem to function in formula editor
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m0leyAuthor Commented:
i have managed to install the DateAdd function as i am using version 7. Only to find another error shows up. This time is states 'A date-time is required here'
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mlmccCommented:
What does {SaleDate} look like.  It needs to be a DateTime.  If it is a string you can use CDate(SaleDate) to convert to a date.

Other options are
DateTime (YYYY,MMM,DD)
Date (YYYY,MMM,DD)

Look through the Date and Type Conversion functions in the formula editor.  Use the HELP to determine what each requires and expects.  You should be able to find a way to convert  to a datetime.

mlmcc
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m0leyAuthor Commented:
mimcc,

CDate did not work, however DateTime works, and after a couple more hours trying to grab the whole week of last year, i have managed to get it working.... thx a lot for help!

much appreciated :)

m0le2000
0
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