In this case you need to dereference the first parameter of push e.g 
my %hash = ( foo => [ ] );
push @{ $hash{foo} }, "a string";
print $hash{foo}->[0];

__output__

a string

[download]
This is because push expects an array as the first parameter, and because hash values can only hold scalar values you have to dereference the value for push. For more info on dereferencing see. tye's References quick reference and perlreftut.
HTH

_________
broquaint

In reply to Re: Forcing Array Context by broquaint
in thread Forcing Array Context by Anonymous Monk

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