XMPPFramework: Trying to update nickname on VCard - ios

Question

This question is as simple as its title says: I'm trying to update a user nickname on his VCard but I cannot. I'm using this code:
dispatch_queue_t queue = dispatch_queue_create("queue", DISPATCH_QUEUE_PRIORITY_DEFAULT);
dispatch_async(queue, ^{
XMPPvCardTemp *myVcardTemp = [[[self appDelegate] xmppvCardTempModule] myvCardTemp];
[myVcardTemp setNickname:#"a_nickname"];
[[[self appDelegate] xmppvCardTempModule] updateMyvCardTemp:myVcardTemp];
});
I cannot imagine why this piece of code don't want to work while the same piece, but updating photo, is working like a charm:
NSData *imageData = UIImagePNGRepresentation(anImage);
dispatch_queue_t queue = dispatch_queue_create("queue", DISPATCH_QUEUE_PRIORITY_DEFAULT);
dispatch_async(queue, ^{
XMPPvCardTemp *myVcardTemp = [[[self appDelegate] xmppvCardTempModule] myvCardTemp];
[myVcardTemp setPhoto:imageData];
[[[self appDelegate] xmppvCardTempModule] updateMyvCardTemp:myVcardTemp];
});
Any help would be appreciated... this is driving me crazy
NOTES: I'm using OpenFire as XMPP server
And this is the stanza the server returns me when I'm trying to update the nickname
RECV: <iq xmlns="jabber:client" type="result" from="7db55e68-cb18-4826-befd-0eb9269637aa#000.000.000.000" to="7db55e68-cb18-4826-befd-0eb9269637aa#000.000.000.000/2cfc4f88"><chat_jorges xmlns="vcard-temp"><NICKNAME>chat_jorges</NICKNAME></chat_jorges></iq>
(I changed my server's ip for 000.000.000.000)

Answer 1

EDIT : I WAS TOTALLY WRONG DON'T READ THIS
Actually when I read the source code of XMPP, I wonder how it could set a value.
In XMPPvCardTempBase.h :
#define XMPP_VCARD_SET_STRING_CHILD(Value, Name) NSXMLElement *elem = [self elementForName:(Name)];
//it looks like a get and not a set??
And in XMPPvCardTemp.m :
- (void)setNickname:(NSString *)nick {
XMPP_VCARD_SET_STRING_CHILD(nick, #"NICKNAME");
}
Maybe there is something as KVC somewhere...
Can you try this in the source code:
- (void)setNickname:(NSString *)nick {
XMPP_VCARD_SET_STRING_CHILD(nick, #"NICKNAME") = nick ;
}