Adding Multiple Cisco-AVPairs using rlm_perl

I have a rlm_perl script where i'd like to return multiple Cisco-AVPair attributes in an Access-Accept response. Since rlm_perl is passed hashes for RAD_REQUEST, RAD_CHECK, and RAD_REPLY, is there a way to pass an array as the value for the Cisco-AVPair hash key? If not, is there another way to do this? Thanks, James