Your dump is telling you that you that you have pushed multiple reference to the same variable. There is no point in printing its value multiple times. I cannot offer a real fix without seeing the declaration of your variables and the statement that prints the dump. Perhaps you need: 
push( @{ $self->{"lags"} }, {%lag_detail} );

[download]

This would push a reference to an anonymous hash which contains a current copy of your hash.

Bill

In reply to Re: Push array to hash by BillKSmith
in thread Push array to hash by bartrad

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