can i modify or replace a shape for an assembly ? (Adding new shape replacing the old opencascade shape)

[RajanHexa]

i have the following code for replacing the shape for non assembly model but it doesn't work on an assembly. so is there any different approach for it

function  replaceOpenCascadeShape(inShapeTool, oldOpenCascadeShape, newOpenCascadeShape, openCascade) {
    let reShapeTool = new openCascade.BRepTools_ReShape()
    reShapeTool.Replace(oldOpenCascadeShape, newOpenCascadeShape)
    let label  = inShapeTool.FindShape_2(oldOpenCascadeShape, true);
    let newShape = reShapeTool.Apply(newOpenCascadeShape, openCascade.TopAbs_ShapeEnum.TopAbs_SHAPE)
    let assembly  = getAssembly(inShapeTool, openCascade)
    if (!openCascade.XCAFDoc_ShapeTool.IsAssembly(assembly)) {
        inShapeTool.SetShape(label, newShape)
    }
}