how do I get the parent's album custom data on an image page?

i need the custom data of the parent of the album in which i am viewing an image

is there something like this?

`global $_zp_current_album;

$parentalbum = $_zp_current_album->getParent();

$parentalbum = $parentalbum->customdata;`

solved...
pff..took me an hour..but so obvious

`global $_zp_current_album;

$parentalbum = $_zp_current_album->getParent();

$parentdata = $parentalbum->getCustomData();`

could not get it to work becuase I was using getAlbumCustomData...