Convert string from PowerApps to datetime in specific format

[dimi]

Hi all

I am struggling with this ...

I receive a string in different formats from a PowerApp that is coming from a DatePicker.

Altough I have set in the Function FlowName.Run(...) that all dates should be in the DateTime.ShortDate format (from PowerApps) it arrives in different formats in my Flow.

The formats i receive are:

• April 17, 2019
• 17-4-2019
• 4-17-2019

This doesn't make sense for me as I pass this value in a Function =>

Text(DateTimeControlName.SelectedDate,DateTimeFormat.ShortDate)

But still I receive different formats in Flow (shown above).

I am trying to convert them all regardless of how they come in, into the MM-dd-yyyy format but i fail each time.

I tried the formatDateTime() function and the Convert to timezon action in Flow but each time i get

Unable to process template language expressions for action X at line '1' and column '2554': 'In function 'converttimezone', the value provided for date time string '18-4-2019' was not valid. The datetime string must match ISO 8601 format.'.

What am I overseeing here?

[zahir-firasta]

@dimi Can you please try using a Compose action as explained here with "MM-dd-yyyy" format?

[dimi · Accepted solution]

@zahir-firasta  thank you, i tried this one before but this does not work either, gives me the same error.

See attachment:

formatDateTime(variables('DatumGesprek'),'MM-dd-yyyy')

I can't seem to validate it having it between the @{} like this

@{formatDateTime(variables('DatumGesprek'),'MM-dd-yyyy')}

So i paste it in the 'Input' field which does validate but still gives me the error.

[dimi · Accepted solution]

Hi all,

First of all I made a mistake and have clicked "accept as solution" while I didn't wanted to do that ...

I have solved my problem by formatting my datetime which comes from PowerApp to an ISO format (yyyy-mm-dd) so that all dates come in the same format in my Flow and the Flow formatDateTime() function only accepts ISO xxx formats (noticed this in my errors) so this worked as expected.

Thank you for your time and suggestions!