Is it possible to restrict counts by threshold in report

[DataGeek16]

Hi PBI experts! 

I am working on a usecase that requires the report to restrict the distinct user counts to > 20.

I have multiple filters in the report so there are multiple different ways the count of users could drop down to 20 or below. Is there a way to display nothing or a message 'Cannot determine values' when the counts fall below a certain hardcoded threshold value?

Appreciate the help!  

[v-chuncz-msft]

@DataGeek16,

You may use ERROR Function in measures.

Measure =
IF (
    CALCULATE ( DISTINCTCOUNT ( Table1[user] ), ALLSELECTED () ) > 20,
    "OK",
    ERROR ( "Cannot determine values" )
)

[DataGeek16]

Thank you @v-chuncz-msft. This helps. 

Further, in the measure is there a way to choose a specific color for the error statement? 

ERROR ( "Cannot determine values" )  in Red (say) ? 

[v-chuncz-msft]

@DataGeek16,

This is not supported.

[DataGeek16]

Thanks! The only issue with using error function in this scenario is that when I click on the 'Show Details' portion of the widget, it says that there is a calculation error which in this case is not as I am willingly introducing an error to restrict data from being displayed.