Help - AJAX calling webservice with OUT parameter

Hey All,

I need some help.

I am trying to call a webservice that returns a value, but also has an out parameter.  How do I call this webservice from javascript?

I am trying the following, where outobj is the out parameter:
var outobj = new Object();

var params = { prefixText : this._currentPrefix, count: this._completionSetCount, PagerStyle: this._pagerStyle, PagerArgument: this._pageSize, PageNumber: outobj};
if (this._useContextKey) {
params.contextKey = this._contextKey;
}

// Invoke the web service
this._webRequest = Sys ...