Would it be easier to add the text box after V List Box with align("center") in which you contain both graph builder and the textbox?
Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Big Class.jmp");
nw = New Window("demo",
vlb = V List Box(align("center"))
);
vlb << Append(gb = dt << Graph Builder(Variables(X(:age), Y(:height))));
vlb << append(Text Edit Box("=== Below ==="));
there are also other methods depending on your full dashboard (H Center Box could work for example)
Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Big Class.jmp");
nw = New Window("demo",
vlb = V List Box()
);
vlb << Append(gb = dt << Graph Builder(Variables(X(:age), Y(:height))));
vlb << append(H Center Box(Text Edit Box("=== Below ===")));
-Jarmo