dimension condition by filters

[miguelposada]

Well, I have the next problem.

I have this variable dimension but the problem is that when the first three conditions are not met, the third one does not act as it should. 

${columns_v2_statistics.Variable} and ${columns_v2_statistics.Sub_Variable} are filters of the dashboard.

dimension: dimension_count_lvl3_3 {
    type: string
    sql:
      CASE
      WHEN  ${columns_v2_statistics.Variable} = 'GEO_AREA_ID' THEN ${geo_area.municipio}
      WHEN  ${columns_v2_statistics.Sub_Variable} = 'COMUNIDAD' THEN ${geo_area.comunidad}
      WHEN  ${columns_v2_statistics.Sub_Variable} = 'PROVINCIA' THEN ${geo_area.provincia}
      WHEN  ${columns_v2_statistics.Sub_Variable} = 'MUNICIPIO' THEN ${geo_area.municipio}
      ELSE ${value}
    END ;;
  }