Prepopulate nodereference field with more than one node referenced to

Hi,

I have a content type on which a nodereference field is defined for more than one referenced node (maximum 7 referenced nodes). It is defined as autocompleting textfield and appears in node add form with 7 fields. I want to fill in all the 7 node with one URL and tried the following (example just includes the first two nodes):

http://www.my-page.de/node/add/contenttype?edit[field_nodereference][0][nid][nid]=835&edit[field_nodereference][1][nid][nid]=897

In this way just the first node ID is filled in to the first textfield of nodereference - the other node IDs got lost. Is there any way to define the other referenced nodes with one URL as well???

Greez,
Tobias