I know it will generate several changelog.xml when I create several checkout step for svn build and only build once 。So I want get the current chanlgelog.xml .For example ,I checkout A,B,C project from svn in one build .A generete changelog0.xml ,B  generete changelog1.xml.C generete changelog2.xml ,I want have a variable to identify chanlelog0.xml,because I need use the variable later.