F5 OWA logon page via UPN or samaccountname

Hello guys,

I have OWA logon page for Exchange 2016 on F5 APM version 13.1.3

i have created LDAP authentication pool server

I want to add the ability for my APM profile to use UPN as well as SamAccountname. 

Note : the AD domain is different to the UPN domaine.

 what is the best way to do this ?

 Thanks,

Raydakis