cardinality for DropdwonByIndex

Hi,

I got the following error while crating DropdownByIndex as dynamically. I am using the

following code to create node.

IWDNodeInfo dropnode = multipleinfo.addChild("dropnode" , null, true, false, false, true,

false, false, null, null, null);

Error: must not add elements to a Node of cardinality 0..1 or 1..1

By,

Santhu.