$var1={
	'stud.xml'={ 
		'24' => {
			streetname => "xxxx",
			housenum => "138"
		},
		'20' => {
			streetname => "xxxx",
			housenum => "110"
		}
	},
	'pav.xml'={ 
		'26' => {
			streetname => "xxxx",
			housenum => "138"
		},
		'27' => {
			streetname => "xxxx",
			housenum => "110"
		},
	},
	.
	.
	.
}