Display Zero in the empty Rows MDX

HI All,

I was writing one MDX code so I wanna display "0" for empty rows.

I was calling two rows in some cases it might have empty rows in some cases. some of them seems not empty but displaying as a empty. I was giving one example and member properties. Can anyone guide me please?

SELECT 
  NON EMPTY 
    {
      [Measures].[TaskCount]

    } ON COLUMNS
 ,NON EMPTY 
    {
        [Dim_Task].[AppointmentStart].[All].CHILDREN
         *
        [Dim_Task].[AppointmentFinish].[All].CHILDREN
    }
  DIMENSION PROPERTIES 
    MEMBER_CAPTION
   ,MEMBER_UNIQUE_NAME
   ON ROWS
 
 FROM(
	SELECT
		StrToSet(
		--	@ParameterJobNumber
		'[Dim_Task].[TaskNumber].&[86789540001]'
			,CONSTRAINED
		) 
	ON COLUMNS
FROM [Cube]
)
CELL PROPERTIES 
  VALUE
 ,BACK_COLOR
 ,FORE_COLOR
 ,FORMATTED_VALUE
 ,FORMAT_STRING
 ,FONT_NAME
 ,FONT_SIZE
 ,FONT_FLAGS;