After Effects Script to create compositing and open it

Is a script that create a compositing with 3 layers, all works, but can't make to open the compositing

I tried different codes for internet app.project.activeItem and app.project.numItems and no one open a compositing

//*

````

function createCompositionWithShapes() {
    app.beginUndoGroup("Create Composition with Shapes");

    // Create a new composition
    var comp = app.project.items.addComp("ColorComp", 1920, 1080, 1, 10, 30);
    
    // Create shape layers
    var shapes = ["Red", "Green", "Blue"];
    var colors = [[1, 0, 0], [0, 1, 0], [0, 0, 1]]; // RGB colors for Red, Green, Blue

    for (var i = 0; i < shapes.length; i++) {
        var shapeLayer = comp.layers.addShape();
        shapeLayer.name = shapes[i];

        // Create a shape group
        var shapeGroup = shapeLayer.property("Contents").addProperty("ADBE Vector Group");
        var shape = shapeGroup.property("Contents").addProperty("ADBE Vector Shape - Ellipse");
        shape.property("Size").setValue([200, 200]); // Set size of the shape

        // Create a fill for the shape
        var fill = shapeGroup.property("Contents").addProperty("ADBE Vector Graphic - Fill");
        fill.property("Color").setValue(colors[i]); // Set color for the fill

        // Position the shape layer
        shapeLayer.transform.position.setValue([comp.width / 2, comp.height / 2 + i * 150]);
    }

  

    app.endUndoGroup();
}

// Run the function to create the composition
createCompositionWithShapes();

  // Ensure the composition is visible in the viewer
    var viewerFound = false;
    for (var i = 0; i < app.project.viewers.length; i++) {
        var viewer = app.project.viewers[i];
        if (viewer && viewer.type === ViewerType.VIEWER_COMPOSITION) {
            viewer.setActive();
            viewerFound = true;
            break;
        }
    }

````

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