IF E.Lassimilinami = .T.
* is equivalent to 
IF E.Lassimilinami 
* because E.Lassimilinami has logical value already

See code below

    SUM( IIF( E.Lassimilinami AND ( P.Iassimilid OR P2.Iassimilid ), ;
H.n100 + H.n100_2 + H.n120 + H.n120_2 , 0.00 )) totHoAs ;

>
>i don't understand.
>
>How can i write it ?
>
>bernhart
>
>
>>Bernhart,
>>
>>When variable has logical value there's no need to compare it with .T. or .F.
>>

>>    SUM( IIF( E.Lassimilinami AND ( P.Iassimilid OR P2.Iassimilid ), ;
>>H.n100 + H.n100_2 + H.n120 + H.n120_2 , 0.00 )) totHoAs ;

>>
>>