rlm_perl and returning > 1 attribute with same name

[Mike]

Hello,

I am using rlm_perl and I have an application where I would like to 
return possibly more than 1 Filter-Id in my response.

In perl, the relevent code would be this:

$RAD_REPLY{'Filter-Id'} = "some_filter"

Unfortunately, this also will only create 1 avpair by the name 'Filter-Id'.

How would I go about returning more than 1 or am I stuck because of perl?

Mike-