getPastTime(1, 'Month') returning wrong month

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Posted on by Simon_P

I have a monthly flow that adds a row into an enitity for all users. the formula i use is: getPastTime(1, 'Month')

This formula doesn't return September though. I created a seperate flow that use emails me the details

The result of the mail is:

-1 = August 2019
Formula = formatDateTime(getPastTime(1, 'Month'), 'MMMM yyyy')
-2 = August 2019
Formula = formatDateTime(getPastTime(2, 'Month'), 'MMMM yyyy')
-3 = July 2019
Formula = formatDateTime(getPastTime(3, 'Month'), 'MMMM yyyy')
-4 = June 2019
Formula = formatDateTime(getPastTime(4, 'Month'), 'MMMM yyyy')

I can't see what i am doing wrong here.

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Building Power Apps

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npalmer610 9 on at

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I'm having the same issue. Hope someone can get back about this. The expression I'm using is
getPastTime(1, 'Month', 'MMMM') and that returns August 2019 instead of September 2019.

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v-xida-msft Microsoft Employee on at

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Hi @Simon_P ,

Based on the issue that you mentioned, I have made a test on my side, and don't have the issue that you mentioned. The screenshot as below:

The result as below:

set the Inputs field of the "Compose" action to following:

getPastTime(1,'Month','MMMM yyyy')

set the Inputs field of the "Compose 2" action to following:

subtractFromTime(utcNow(),1,'Month','MMMM yyyy')

Note: It is not necessary to add additional formatDateTime() function to convert the date time value.

On your side, please consider take a try with above subtractFromTime(...) formula, then check if the issue is solved.

If the issue still exists, please consider take a try with the following formula within your flow's action:

addDays(utcNow(),-31, 'MMMM yyyy')

then check if the issue is fixed.

Best regards,

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Simon_P 6 on at

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Morning @v-xida-msft,

I've not been able to test this properly yet, as when i use the erroring formula, it is returning the correct data today (2nd Oct). I will need to test again on the 1st.

When it comes to adding the date into an Entity as a date, the formula you gave doesn't work, as it throws the below error:
"message": "DateTime is less than minumum value supported by CrmDateTime. Actual value: 01/01/0001 00:00:00, Minimum value supported: 01/01/1753 00:00:00",

What should i be using to get last month as a date (for entry to an entity)

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glogic 2 on at

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Function getPastMonth relies on utc.
If you're at another time zone, it is better to use subtractFromTime(convertFromUtc(utcnow(), 'Your time zone'), 1, 'Month').

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