Why isn't this working?
eval "$response = $ua->request($r);" print "[email protected]";
syntax error at (eval 8) line 1, near "="
It isn't working because your double-quoted string is subject to interpolation, which is not going to go well, with those variables being expanded in place. And you need a semicolon outside your eval, not so much inside it. Try single quotes like so:
eval '$response = $ua->request($r)';