my %HoH = ( SUB1 => { Test1 => { value1 => "2300", value2 => "0.01", }, Test2 => { value1 => "5000", value2 => "0.34", }, Test3 => { value1 => "3000", value2 => "0.10", }, Test4 => { value1 => "7000", value2 => "0.33", }, }, SUB2 => { Test1 => { value1 => "2800", value2 => "0.05", }, Test2 => { value1 => "5500", value2 => "0.34", }, }, SUB3 => { Test1 => { value1 => "2700", value2 => "0.25", }, Test2 => { value1 => "5800", value2 => "0.45", }, }, );