Zeoslib Portal

I've use Delphi 7 + ZeosLib 6.1.5 with Linux Conectiva 10 and Firebird 1.5.
See the code above:

var X:TBookMark;
begin
with Table1 do
begin
//only fill
insert;
Table1COD.Value:=1;
Table1TITLE.Value:='TEST '+IntToStr(Random(10));
post;

//here
X:=GetBookmark;
Refresh;
GotoBookmark(X);
FreeBookmark(X);
end;

The command "GotoBookmark" it does locate in Windows, but not in Linux.

help me!!!!!