Gregory,

You don't have to take out namespace declaration from XML but rather add it to the SelectionNamespaces property

Obj.SelectionNamespaces = STRCONV("xmlns:ns='http://ns.adobe.com/xfdf/'",12)
...

Obj.AddTableSchema('aa', FALSE, strconv('ns:f', 12))
...
Obj.AddTableSchema('Ids', FALSE, strconv('ns:Ids', 12))
...

>
>if I take

xmlns="http://ns.adobe.com/xfdf/"

out of the xml
>
<snip>