POST upload api don't work

#1

Hi, I’m trying to post my asset using the upload api. But I get a login page returned and no asset gets uploaded. I checked my api_key and destfolderid are correct.
Can you help me ?
my url: http://mydomain/razuna/raz1/dam/index.cfm?fa=c.apiupload&api_key=xxxx&destfolderid=xxxxx

Thanks