Only Bar Chart failed to show the number of cases by process variants

Hi, I am trying to show the number of cases devided by variants of process using following dimension and KPIs.

Dimension
DISTINCT (VARIANT("_CEL_MM_ACTIVITIES"."ACTIVITY_JA"))
ACTIVITY_JA contains the name of activities

KPIs
COUNT_TABLE("_CEL_MM_ACTIVITIES_CASES")

Only the Bar Chart is refused to show the result showing following error. OLAP and other types of graphics elements show successfully what I want.

image

I believe the code is pretty simple, I cannot understand why the code does not work only in the Bar Chart.

I have tried following things already, fyi;

  • writing without DISTINCT
  • writing with SHORTEND
  • counting other things e.g. ACTIVITIES

Please let me know should you require additional information concerning this issue.

Best