>>You needed
>>
>>

>>select Books.*,Acc.prin,Acc.status;
>>     From;
>>         Acc;
>>        inner join mainbase!books ;
>>on acc.ID=books.Id;
>>where acc.status= m.status ;
>>into cursor return nofilter
>>

>m.status?
>what is M?

m. is used to distinguish memory variables (m stands for memory) from the fields. It's not really needed, but in some cases when you have a field in a table named the same as a variable, you need to use m. to tell the program you meant memory variable and not a field (fields always have precedence).