Processing SUB2 Processing Element2 HASH(0x1ba4bfc) Type: Type2 HASH(0x1ba4bfc) content: Type 2 value HASH(0x1ba4c08) Type: Type3 HASH(0x1ba4c08) content: Type 5 value #### Not a HASH reference (#1) (F) Perl was trying to evaluate a reference to a hash value, but found a reference to something else instead. You can use the ref() function to find out what kind of ref it really was. See perlref.