Here is an example of how to do what I think you want, by using a JMP list as the structure that will allow iteration
Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA\Big Class.jmp" );
// iteration list
iList = {};
// Create a display window
NW = New Window( "Test", ob = Outline Box( "Results" ) );
// Create multiple V List Boxes and add them to the display window
For( i = 1, i <= 4, i++,
V = V List Box( Text Box( "V List " || Char( i ) ) );
ob << append( V );
// Place the handle for each of the V List Boxes into the list
Insert Into( iList, V );
);
// Now add to the display window by referencing the V List Box of choice
iList[2] << append( Bivariate( x( dt:Height ), y( dt:Weight ) ) );
iList[4] << append( Bivariate( x( dt:Age ), y( dt:Weight ) ) );
Jim