Bingo! Adding New Window worked. Thanks Jarmo!
BLAH_REPORT = New Window("", Bivariate(
Y( :Data ),
X( :pdatetime ),
By( :SEQ, :CATEGORY, :STAGE, :STEP, :MEAS_TYPE ),
Add Text Annotation( Text( "Updated: " || date_today ), Fixed Size( 2 ), Text Box( {1400, 3, 1800, 62} ), Filled( 0 ) ),
SendToReport(
Dispatch(
{},
"Bivar Plot",
FrameBox,
{Row Legend(
:GRP,
Color( 1 ),
Color Theme( "STRONG" ),
Marker( 0 ),
Marker Theme( "" ),
Continuous Scale( 0 ),
Reverse Scale( 1 ),
Excluded Rows( 0 )
), Frame Size( 1367, 480 )}
)
)
);
);