SQL & PL/SQL

I have the scripts that creates synonyms and i need to execute these scripts from SQL Plus.
I want to pass the &owner_user value as an argument, but the script still comes back and asking for the owner_name.

create or replace synonym V_REPORTS_USAGE for &owner_user..V_REPORTS_USAGE;

create or replace synonym V_STATION_USAGE for &owner_user..V_STATION_USAGE;

How do i execute these scripts.

Thanks
-Prasad