java - Cannot retrieve the description of pubsub node with other users with Smack library -

i'm trying retrieve description of pubsub node. can set field when i'm going retrieve value, owner of node can it. i'm using command line:

mgr.getnode(categoria).getnodeconfiguration().getfield("pubsub#description").getvalues().get(0); 

where mgr pubsubmanager, categoria name of pubsub. why owner can see it? how can allow non-subscribed user see description of node before subscribing it? access type open.