SQL String in Delphi7 and Crystal 9.2.2

[DavIlan]

Hi All
I use Depphi 7 and Crystal 9.2.2
I have written the following code :

CReport:=Application1.OpenReport
('Report1.rpt',crOpenReportByTempCopy);
CReport.DiscardSavedData;

for i := 1 to CReport.Database.Tables.Count do begin
CReport.Database.Tables.Item.SetLogOnInfo
(Server,Database,UserID,Password);
end;

CRViewer91.EnableExportButton := true;
CRViewer91.ReportSource:=CReport;
CReport.SQLQueryString := Query1.SQL.Text;
CRViewer91.ViewReport;

Checking the parameter ( SQLQueryString ) while debugging shows that the value is not being set, and the actual/original value that exists in the report, is the one being kept ( the result also shows that the old SQL is the one being run !!!
How can i override it ???
From the Crystal PDF i get the following :

SQLQueryString --> String --> Gets or sets SQL query string --> Read/Write --> Can be written only when
formatting idle.

What is the 'Formatting Idle' and how can i change it to FiormattingActive or FormattingInActive ???
Thanks in advance,