Hi My stylus pen is not supporing wireless charging for iPads is there any specific reason

Are you using an Apple Pencil, or a third-party stylus with your iPad?

Only the second generation Apple Pencil and new Apple Pencil Pro support wireless/inductive charging with a compatible model iPad. By contrast, the first generation Apple Pencil and low-cost USB-C Pencil can only pair a charge via a direct wired connection to the host iPad.

As for third-party Stylus, you will need to confirm compatibility and charging capabilities with the Stylus' manufacturer.

Support for wireless charging is not as simple as "enabling" functionality...

In addition to the iPad being capable, for wireless charging to work at all, the Apple Pencil (or third-party alternative) must also include the necessary internal electronic components.

Yes