QuickActions

I am passing the following dictionary while calling quickAction.removeBackground

quickActions: [
  {
    id: 'edit-in-express',
    label: 'Edit in Adobe Express',
    action: {
      target: 'express',
    },
    style: {
      uiType: 'button',
    },
  },
];

However, after clicking "Edit in Adobe Express," the given zIndex is not getting applied.

I am sending:

quickAction.removeBackground(docConfig, config, quickActionExportConfig, { zIndex: 10000 });

What should i do ?