topic Re: Selectedmeasureformatstring DAX Calculation Item in DAX Commands and Tips

Selectedmeasureformatstring DAX Calculation Item

MrRong — Sat, 03 Feb 2024 05:30:50 GMT

Hi everyone,

I ran into an error while trying to create a Calculation Group.

I have a Measure:

As you can see, the data type depends on the CalcType.

I created a Test calculation group:

With Calculation items:

1) Actual

2) Actual PY

3) Variance PY

The Matrix visual works fine with Actual and Actual PY.

However, as soon as I created the Variance PY, the visual has this error:

It relates to the CalcType=3, FORMAT([PL_%_of_Revenue_Actual],"0.00%")

I have been trying to troubleshoot the error. The possible solution is Selectedmeasureformatstring DAX measure in the Dynamic Format String.

I am unable how to apply to my Calculation Item measure.

Can someone please help?

Thanks very much

Re: Selectedmeasureformatstring DAX Calculation Item

OwenAuger — Sun, 04 Feb 2024 05:16:40 GMT

Hi MrRong

Yes, I believe you're correct in identifying the issue, and part of the solution (dynamic format string) 🙂

The issue is:

PL_Total_Amount_Actual_2 returns a text value for CalcType = 3 or CalcType =4.
In this case, when the calculation item "Variance PY" is applied to this measure, the text values containing the "%" character cannot be cast as numbers, so an error is returned.

My recommendation would be to:

1. Adjust the PL_Total_Amount_Actual_2 measure so that it always returns a numerical value:

PL_Total_Amount_Actual_2 = VAR CalcType = SELECTEDVALUE ( PL_header[CalcType] ) VAR DisplayDetailCode = SELECTEDVALUE ( PL_header[Detail] ) VAR isSubHeaderVisible = ISFILTERED ( PL_accounts[Subheader] ) VAR Result = SWITCH ( TRUE (), isSubHeaderVisible = TRUE () && DisplayDetailCode = 0, BLANK (), CalcType = 1, [PL_additive_total_Actual], CalcType = 2, [PL_running_total_Actual], CalcType = 3, [PL_%_of_Revenue_Actual], CalcType = 4, [PL_%_of_running_Total_Actual] ) RETURN Result

2. Give the PL_Total_Amount_Actual_2 measure a dynamic format string similar to this:

VAR DefaultFormat = "#,##0;(#,##0);-" -- change as needed VAR PercentageFormat = "0.00%" VAR CalcType = SELECTEDVALUE ( PL_header[CalcType] ) VAR DisplayDetailCode = SELECTEDVALUE ( PL_header[Detail] ) VAR isSubHeaderVisible = ISFILTERED ( PL_accounts[Subheader] ) VAR Result = SWITCH ( TRUE (), -- This first condition can be omitted if you like, since measure is blank isSubHeaderVisible = TRUE () && DisplayDetailCode = 0, BLANK (), CalcType IN { 1, 2 }, DefaultFormat, CalcType IN { 3, 4 }, PercentageFormat ) RETURN Result

3. For the calculation group, ensure that each calculation item has format string expression

SELECTEDMEASUREFORMATSTRING ()

Does this fix it for you?

Please post back if needed.

Regards

Re: Selectedmeasureformatstring DAX Calculation Item

MrRong — Sun, 04 Feb 2024 10:44:26 GMT

Hi OwenAuger ,

Thanks for helping me out.

I followed your instructions but it is still giving me the error.

1) Measure is updated:

2) PL_Total_Amount_Actual_2 measure a dynamic format string

3) Each Calculation Item have format string

The error in the Matrix visual is:

Do my Calculation Items have correct DAX measure?

I wonder that if we need a DAX in the Dynamic format string for the 3 Calculation Items?

Thanks for your help,

Re: Selectedmeasureformatstring DAX Calculation Item

Anonymous — Mon, 05 Feb 2024 07:32:00 GMT

Hi MrRong ,
To troubleshoot this problem, this function can be used in the dynamic format of the MEASURE. This DAX function returns the format string set for the currently evaluated metric. You can then use conditional logic to set the format string dynamically based on SELECTEDMEASUREFORMATSTRING.To solve this problem, this function can be used in the dynamic format of the MEASURE. This DAX function returns the format string set for the currently evaluated metric. You can then use conditional logic to set the format string dynamically based on SELECTEDMEASUREFORMATSTRING.

VAR CurrentFormatString = SELECTEDMEASUREFORMATSTRING() VAR CalcType = SELECTEDVALUE ( PL_header[CalcType] ) RETURN SWITCH ( TRUE(), CalcType = 1, [PL_additive_total_Actual], CalcType = 2, [PL_running_total_Actual], CalcType = 3, [PL_%_of_Revenue_Actual], CalcType = 4, [PL_%_of_running_Total_Actual] CurrentFormatString )

For more information on how to use , please refer to the official documentation
SELECTEDMEASUREFORMATSTRING function (DAX) - DAX | Microsoft Learn
For more information on calculating group formats, you can refer to these documents
Dynamic format strings with calculation groups - SQLBI
Controlling Format Strings in Calculation Groups - SQLBI

Best regards

Albert He

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

Re: Selectedmeasureformatstring DAX Calculation Item

OwenAuger — Mon, 05 Feb 2024 10:00:08 GMT

Hi again MrRong

I see Anonymous has also replied but I'll reply directly to your post.

1. Measure looks good 🙂

2. The measure's dynamic format string looks good 🙂

3. The calculation items don't look right.

The calculation item expressions for Actual, Actual PY and Variance PY should remain unchanged from your original version, i.e. including SELECTEDMEASURE() within the expressions.
However, you should enable Dynamic format string for each calculation item and set it to SELECTEDMEASUREFORMATSTRING().
Generally speaking, it would only make sense to use SELECTEDMEASUREFORMATSTRING() within the Format string expression, not the calculation item expression itself.
The overall purpose of my suggestions were to ensure the measure (with calculation items applied) returns numerical values, and the formatting is controlled solely by format strings.

Sample screenshots:

Re: Selectedmeasureformatstring DAX Calculation Item

MrRong — Mon, 05 Feb 2024 11:42:48 GMT

Thank you Albert He

Re: Selectedmeasureformatstring DAX Calculation Item

MrRong — Mon, 05 Feb 2024 11:44:44 GMT

Hi Owen, You are spot on the solution. It is great how you troubleshoot the issue, it is very professional. Thanks again, Jimmy Truong