I am need help figuring out a way to write this code to make it so that the first OBX in the series starts at 1. Then the Next will be 2, and then etc... What kind of function can I put in the assign value ='OBXCount' field to help me obtain that?

Class Training.Project2DTL Extends Ens.DataTransformDTL [ DependsOn = EnsLib.HL7.Message ] { XData DTL [ XMLNamespace = "http://www.intersystems.com/dtl" ] { } Parameter IGNOREMISSINGSOURCE = 1; Parameter REPORTERRORS = 1; }