I modified the alias sample code from:

    [request addRequestHeader: @"Content-Type" value: @"application/json"];
    [request appendPostData:[[NSString stringWithFormat: @"{\"alias\": \"%@\"}", self.deviceAlias]
                          dataUsingEncoding:NSUTF8StringEncoding]];

to:

[request addRequestHeader: @"Content-Type" value: @"application/json"];
[request appendPostData:[[NSString stringWithFormat: @"{\"tags\": \"%@\"}", offsetStr]
                                                 dataUsingEncoding:NSUTF8StringEncoding]];

offsetStr is a string containing a Timezone offset (which can be any number between -12 and 12).

For some reason, Urban Airship is making each character of the string into its own tag.

I've tried to substitute the - for a string neg with the same results.

What's wrong?