detail filter if condition error

[div_1234]

hi
i m trying to use detail filter and wanna to use this condition.


IF(([account1].[value]) ='notepad' ) then
    if([account1].[book_value]  is not null) then
([account1].[BOOK1])
else
(' ')

i m having parsing error,whats wrong in this.

How to if then in detail filter

Thanks

[blom0344]

That is not a filter expression. A filter expression returns a true/false output, not the value of a dataitem. You can however use the code for a calculated data-item

[HalfBloodPrince]

Create calculation using that if else  and then try to filter it.