Hi,

try undef $infilestore.
You have created a hash_ref, not a hash, but you are trying to clear %infilestore, an unrelated hash.
Or, perhaps you meant  %$infilestore=undef. That dereferences the hash and undefines it. :-)

Hope this helps

thinker

Update As fever points out, what has been built is a hash of array refs, and not an array of hash refs. This answer does not therefore apply to this question. :-)