Why excludes option not work in emma plugin?

I want to excludes some packages at emma coverage . And i tried excludes: "**/CutPojo.*" , but it didn’t worked .

This is gradle script :

    test {
        // add EMMA related JVM args to our tests
        jvmArgs "-XX:-UseSplitVerifier", "-Demma.coverage.out.file=$buildDir/tmp/emma/metadata.emma", "-Demma.coverage.out.merge=true"

        doFirst {
           println "Instrumenting the classes at " + sourceSets.main.output.classesDir.absolutePath
           // define the custom EMMA ant tasks
           ant.taskdef( resource:"emma_ant.properties", classpath: configurations.emma.asPath)

           ant.path(id:"run.classpath") {
           def emmaInstDir = new File(sourceSets.main.output.classesDir.parentFile.parentFile, "tmp/emma/instr")
           println "Creating $emmaInstDir to instrument from " +       sourceSets.main.output.classesDir.absolutePath
           // instruct our compiled classes and store them at $buildDir/tmp/emma/instr
           ant.emma(enabled: 'true', verbosity:'info'){
              instr(merge:"true", destdir: emmaInstDir.absolutePath, instrpathref:"run.classpath",
                    metadatafile: new File(emmaInstDir, '/metadata.emma').absolutePath) {
                 instrpath {
                 //here exclude `CutPojo` class .
                  fileset(dir:sourceSets.main.output.classesDir.absolutePath, excludes: "**/CutPojo.*")
           setClasspath(files("$buildDir/tmp/emma/instr") + configurations.emma +    getClasspath())

        // The report should be generated directly after the tests are done.
        // We create three types (txt, html, xml) of reports here. Running your build script now should
        // result in output like that:
        doLast {
           def srcDir = sourceSets.main.java.srcDirs.toArray()[0]
           println "Creating test coverage reports for classes " + srcDir
           def emmaInstDir = new File(sourceSets.main.output.classesDir.parentFile.parentFile, "tmp/emma")
              new File("$buildDir/reports/emma").mkdirs()
              report(sourcepath: srcDir){
                 fileset(dir: emmaInstDir.absolutePath){
           println "Test coverage reports available at $buildDir/reports/emma."
           println "txt: $buildDir/reports/emma/coverage.txt"
           println "Test $buildDir/reports/emma/coverage.html"
           println "Test $buildDir/reports/emma/coverage.xml"

And i still get the CutPojo class coverage :
How do i solve this ?