When form combobox changes, record date/time of change

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Posted on by Medoomi

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I have a form which contains a ComboBox DataCardValue92, based on a CDS column "Opportunity Status."

It's Items value is: SortByColumns(Choices([@Projects].'Opportunity Status'),"cr6a2_order")

Then I have another card on the form based on a date/time column. I want to use this to write the current date/time if and when the value of DataCardValue92 changes.

The Date box of this card is labelled DateValue5. Within the DefaultDate of that box, I am using this code:

If(ThisItem.'Opportunity Status'.Forecasting = DataCardValue92.Selected.Forecasting,Parent.Default, Now())

But I am receiving two errors in this code.

The first is for DataCardValue92, that "powerapps encountered an internal error trying to evaluate this expression."

The second is that "this formula uses scope which is not presently supported for evaluation."

Would anyone be so kind as to guide me where my code is going wrong?

Thanks!

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WarrenBelz 156,007 Most Valuable Professional on at

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Hi @Medoomi ,

Try

If( ThisItem.'Opportunity Status'.Forecasting = DataCardValue92.Selected.Forecasting, ThisItem.YourDateFieldName, Today() )

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Medoomi 523 on at

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Thanks so much @WarrenBelz ,
I tried the code above, but the two errors are still being reported:
DataCardValue92 - "powerapps encountered an internal error trying to evaluate this expression."
entire code snippet - "this formula uses scope which is not presently supported for evaluation."
The code *appears* to work, but I'm assuming I really should track down what's causing the errors?

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WarrenBelz 156,007 Most Valuable Professional on at

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Hi @Medoomi ,

I tried the obvious first (making the two possible values on the second line the same type).

So now going to the first line, put two labels in a custom card in your form with

ThisItem.'Opportunity Status'.Forecasting

and

DataCardValue92.Selected.Forecasting,

and see if you get values in both

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Medoomi 523 on at

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thx @WarrenBelz
ThisItem.'Opportunity Status'.Forecasting
displays "Sold," with a data type: text
DataCardValue92.Selected.Forecasting
also displays "Sold," with a data type: text
Is there any other place I can look?

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WarrenBelz 156,007 Most Valuable Professional on at

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@Medoomi ,

There are only two parameters here - as a final test (which I am sure will show true), put this on a Label in the form

ThisItem.'Opportunity Status'.Forecasting = DataCardValue92.Selected.Forecasting

If so, the issue has to be with the Date field - so a button

UpdateContext({varDate:ThisItem.YourDateFieldName})

look in View > Variables and see if varDate is a date

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Medoomi 523 on at

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@WarrenBelz Thank you so very much again.
Yes, the first parameter checked out fine, with the result "true."
When I put the code from the second parameter in a button the following part of the formula:
ThisItem.'OP Status Change Date'
(the column in question) generated the error "this formula uses scope, which is not presently supported for evaluation." It also listed the data type as DateTime.
Pressing the button did not enter a value (as the column is presently empty), but when I checked variables, it listed VarDate as "DateTime"
Is there a way to narrow down what's happening? thanks!

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WarrenBelz 156,007 Most Valuable Professional on at

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Hi @Medoomi ,

I have done a test here - the details are below. Can you please see what is different with your model.

My List is TestFields

DateTest is a Date (only) field

ChoiceTest is a single choice field with A,B,C,D

Both combo boxes are based on the field with the top one (in the form) showing the current field value and the bottom one (outside the form) being used to select the value to compare

Code on the DefaultDate of the DatePicker

Different choice made - shows the date currently in the list

Same choice - shows the current day

The point is that the DefaultDate code is valid providing the field in the List is a Date field.

Can you please see what is different here.

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Medoomi 523 on at

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@WarrenBelz
Thank you so very much for detailing the setup, I really appreciate it.
It seems the problem is with the simple code: ThisItem.Anything
When I use it in a DataCard eg. on a label, visually it works (it correctly pulls the data from any column on the record), but it doesn't matter which column this is, it invokes the error for all of them being any data type: "this formula uses scope, which is not presently supported for evaluation."
I have refreshed data connections for what that's worth. Could there be a reason why this code would invoke an error for every column?

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Medoomi 523 on at

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@WarrenBelz I wondered if you could direct me,
I re-created your example, making ChoiceTest a lookup column.
As soon as I enter ThisItem.ChoiceTest into DefaultDate of the date picker, the system flags it with "the formula uses scope, which is not presently supported for evaluation."
Is there a way I can get around this error?

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WarrenBelz 156,007 Most Valuable Professional on at

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@Medoomi ,

Are you using a form or simply putting the controls on the screen? ThisItem has to work in a Form.

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