Set analysis inside if statement

[#1]

Does anyone know how to fix this problem? I cant seem to get the expression to work inside a if statement in a straight table with a dimension called label_churnSummary, but i place it in a textbox, it works fine.

Am i missing something? Thanks in advance.

if(label_churnSummary='Retention %',

  num(

  if(len(GetFieldSelections([FIN YEAR]))>1 or len(GetFieldSelections(MONTH_NAME))>1,

  (

  num(sum({<[FIN YEAR]=,MONTH_NAME=,label_churnSummary=,Measure_churnSummary={'Corrected'},MonthYear={'$(=MonthName(AddMonths(max(Date),-11)))'}>}value_churnSummary),'###0')

)

  ,

  sum({<[FIN YEAR]=,MONTH_NAME=,label_churnSummary=,Measure_churnSummary={'Corrected'},MonthYear={'$(=(MonthName(addmonths(today(),-11))))'}>}value_churnSummary)

  )

  ,'###0')

  ,

  num(

  if(len(GetFieldSelections([FIN YEAR]))>1 or len(GetFieldSelections(MONTH_NAME))>1,

  sum({<[FIN YEAR]=,MONTH_NAME=,MonthYear={'$(=MonthName(AddMonths(max(Date),-11)))'}>}value_churnSummary),

  sum({<[FIN YEAR]=,MONTH_NAME=,MonthYear={'$(=(MonthName(addmonths(today(),-11))))'}>}value_churnSummary)

  )

  ,format_Churn)

  ),

[michael_maeuser]

do you have a sample qvw?

its hard to guess whats going on without seeing anything.