Make combined data table will get you results from each matching table box. Use Make into datatable with correct table box reference to get results from only one.
Here is example when getting the script from Source of datatable (this will create dublicated biv plot thou)
Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Drug.jmp");
biv = Bivariate(
SendToByGroup(Bygroup Default),
Y(:y),
X(:x),
Fit Line({Line Color({76, 114, 176})}),
SendToByGroup({:Drug == "a"}, Fit Line({Line Color({221, 132, 82})})),
By(:Drug)
);
//Source script, will dublicate biv platform
platform = Data Table("Drug=d") << Bivariate(
Y(:y),
X(:x),
Fit Line({Line Color({76, 114, 176})})
);
Wait(0);
Report(platform)[Outline Box("Bivariate Fit of y By x Drug=d")][
Outline Box("Linear Fit")][Outline Box("Summary of Fit")][Table Box(1)] <<
Make Into Data Table;
Report(platform) << Close Window;
Or use Make Combined data table and then delete rows you don't want (this is simpler solution).
-Jarmo