Calling a function in a seperate .as file.

[amcotterill]

I have 1 .fla and 2 .as files. The first .as file is called documentClass and is the document class for the .fla. The second .as file is called tracePrac contains a function that traces a varible in tracePrac.as. I want to know how i call for this function in my documentClass.as code?
tracePrac:

package {
	import flash.display.MovieClip;
	public class tracePrac extends MovieClip {
		public var traceNumber:Number=3245;
		public function tracePrac() {
			trace(traceNumber);
		}
	}
}

documentClass:

package {
	import flash.display.MovieClip;
	public class documentClass extends MovieClip {
		public function documentClass() {
			tracePrac();
		}
	}
}

Thanks for your help
Aaron