Suppose there is a variable which is then declared a value of a hash. I then want to change $test to the content of $change but not change the hash reference. The result should be $test = 'change' while $hash{t} stays $test. 
$test = 'test';

%hash = ( t => $test);

$change = 'changed';

$hash{t} = $change;
#I just want to change $test to 'changed' not $hash{t} to $change

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I understand this is wrong but can't find an explanation for using variables as hash values. thanks for your help pros.

In reply to Changing a variable which is a value of a hash by benedicth

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