Updated values in action function module not send to PI in AIF outbound interface

Hi Experts.

I am working on an outbound aif interface where I am updating plant value using action function module.

Actually we do not want to change plant value in mapping function module due to some valid reasons.

We are using /aif/ send_with_proxy to send the details.

Now the action function module executing successfully and we are able to update th changing parameter data with new plant value.

But when we checked in sxmb_moni , plant values are not getting updated to new one.

Could you please let me know the reason behind it and how to overcome this.

The code which has been written in FM is attached.

Thanks in advance..

Regards ,

Sijil