How to lock a scrollbar to the right border of a p...

Hi, I'm trying to implement a scrollbar for a script in After Effects. I don't know how to code, so I asked ChatGPT for help. Everything is working fine except for the scrollbar's position in X.   What does the code do? It creates a list of 15 white rectangles in a resizeable dockable panel. If the panel is not big enough to display all the rectangles, a scrollbar appears so you can scroll through all the rectangles. Now, the problem is that the scrollbar position in X is just at the right side of the rectangles and I want it locked to the right border of the panel.   The next image shows where the scrollbar position in X is right now (red arrow) and where it should be (blue arrow).   This is the code: // Crear panel dockeable o ventana flotante var myPanel = (this instanceof Panel) ? this : new Window("palette", "Panel Dockeable", undefined, {resizeable: true}); myPanel.orientation = "column"; myPanel.alignChildren = ["fill", "top"]; // Contenedor principal que agrupa los rectángulos y la scrollbar var scrollContainer = myPanel.add("group"); scrollContainer.orientation = "row"; scrollContainer.alignChildren = ["fill", "top"]; // Contenedor visible de los rectángulos (altura variable según el panel) var viewport = scrollContainer.add("group"); viewport.orientation = "stack"; // Evita desplazamiento horizontal viewport.alignChildren = ["fill", "top"]; viewport.margins = 0; // Grupo que se desplazará con la scrollbar var contentGroup = viewport.add("group"); contentGroup.orientation = "column"; contentGroup.alignChildren = ["fill", "top"]; contentGroup.spacing = 5; // Crear 15 rectángulos dentro del grupo desplazable var rectArray = []; for (var i = 0; i < 15; i++) { var rectPanel = contentGroup.add("panel", undefined, ""); rectPanel.preferredSize = [100, 50]; if (rectPanel.graphics) { rectPanel.graphics.backgroundColor = rectPanel.graphics.newBrush(rectPanel.graphics.BrushType.SOLID_COLOR, [1, 1, 1, 1]); } rectArray.push(rectPanel); } // Crear la scrollbar VERTICAL con valor inicial (fallback) var scrollbar = scrollContainer.add("scrollbar", undefined, 0, 0, 100); scrollbar.stepdelta = 10; scrollbar.preferredSize = [20, 250]; // Evento para mover el contenido con la scrollbar scrollbar.onChanging = function () { contentGroup.location = [contentGroup.location[0], -scrollbar.value]; }; function updateScrollbar() { // Obtener la altura actual del panel var panelHeight = myPanel.bounds.height; // Calcular la altura total del contenido (paneles de 50px + 5px de espacio) var totalContentHeight = rectArray.length * (50 + 5); // Calcular la altura disponible (ajustando un margen superior de 50px) var availableHeight = panelHeight - 50; viewport.maximumSize = [100, availableHeight]; if (totalContentHeight > availableHeight) { // Guardar la posición relativa actual antes de recalcular (valor entre 0 y 1) var oldMax = scrollbar.maxvalue || 100; // Si no está definido, usar 100 (valor inicial) var relativePos = oldMax ? scrollbar.value / oldMax : 0; // Actualizar el valor máximo según el nuevo tamaño scrollbar.maxvalue = totalContentHeight - availableHeight; scrollbar.minvalue = 0; // Aplicar el mismo porcentaje a la nueva escala scrollbar.value = scrollbar.maxvalue * relativePos; scrollbar.visible = true; // Actualizar los bounds de la scrollbar para reflejar la nueva altura disponible var sbBounds = scrollbar.bounds; scrollbar.bounds = [sbBounds[0], sbBounds[1], sbBounds[0] + 20, sbBounds[1] + availableHeight]; } else { scrollbar.visible = false; contentGroup.location.y = 0; } // Ajustar la posición del contenido en función del valor de la scrollbar contentGroup.location = [contentGroup.location[0], -scrollbar.value]; myPanel.layout.layout(true); } // Actualizar la scrollbar al redimensionar el panel sin reiniciar la posición relativa myPanel.onResize = function () { updateScrollbar(); }; myPanel.layout.layout(true); updateScrollbar(); // Mostrar la ventana si no es dockeable if (myPanel instanceof Window) { myPanel.center(); myPanel.show(); }  Can anyone help me? Thanks. ... View more