Problem 7

Cause I am a child of the Cold War

Olga the Russian Spy sent a message to the USSR using a carrier pigeon and it was intercepted by the Secret Service. The agents were initially confused by the words

BEND the RULE for RUDEC

Kevin ran to the Library of Congress looking for references to Rudec but Anika spent time working on the letters and found out that the message was numeric. What was the secret message?

BEND + RULE = RUDEC