QueryAdapter Time out PART II

[Dde]

As suggested earlier, I set my timeout values and call the query by code,
but IP still times out after 30 sec! What's wrong with that ?

function CTRL380_6::OnClick(eventObj) {
// Write your code here
XDocument.UI.Alert("This operation can take up to one minute.");
XDocument.DataObjects("EstimateOptim").QueryAdapter.Timeout = 120;
XDocument.DataObjects("EstimateOptim").QueryAdapter.Query();
}

Thanks,

Dominique