Can not use regex in @Parameter(defaultValue)

default-value="[a-zA-Z]{2,}-\\d+"

defaultValue = "[a-zA-Z]{2,}-\\\\d+"

Caused by: com.thoughtworks.qdox.parser.ParseException: Illegal escape character 'd' @[295,85] in file:/home/tchemit/projets/apache/maven/plugins/maven-changelog-plugin/src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java
	at com.thoughtworks.qdox.parser.impl.Parser.yyerror(Parser.java:1018)
	at com.thoughtworks.qdox.parser.impl.Parser.convertString(Parser.java:1126)
	at com.thoughtworks.qdox.parser.impl.Parser.toString(Parser.java:1233)
	at com.thoughtworks.qdox.parser.impl.Parser.yyparse(Parser.java:1800)
	at com.thoughtworks.qdox.parser.impl.Parser.parse(Parser.java:999)
	at com.thoughtworks.qdox.JavaDocBuilder.addSource(JavaDocBuilder.java:353)
	at com.thoughtworks.qdox.JavaDocBuilder.addSource(JavaDocBuilder.java:381)
	at com.thoughtworks.qdox.JavaDocBuilder.addSource(JavaDocBuilder.java:377)
	at com.thoughtworks.qdox.JavaDocBuilder$2.visitFile(JavaDocBuilder.java:467)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:43)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
	at com.thoughtworks.qdox.directorywalker.DirectoryScanner.scan(DirectoryScanner.java:52)
	at com.thoughtworks.qdox.JavaDocBuilder.addSourceTree(JavaDocBuilder.java:464)
	at com.thoughtworks.qdox.JavaDocBuilder.addSourceTree(JavaDocBuilder.java:453)
	at org.apache.maven.tools.plugin.annotations.JavaAnnotationsMojoDescriptorExtractor.discoverClasses(JavaAnnotationsMojoDescriptorExtractor.java:453)
	at org.apache.maven.tools.plugin.annotations.JavaAnnotationsMojoDescriptorExtractor.discoverClasses(JavaAnnotationsMojoDescriptorExtractor.java:443)
	at org.apache.maven.tools.plugin.annotations.JavaAnnotationsMojoDescriptorExtractor.discoverClasses(JavaAnnotationsMojoDescriptorExtractor.java:422)
	at org.apache.maven.tools.plugin.annotations.JavaAnnotationsMojoDescriptorExtractor.scanJavadoc(JavaAnnotationsMojoDescriptorExtractor.java:188)
	at org.apache.maven.tools.plugin.annotations.JavaAnnotationsMojoDescriptorExtractor.execute(JavaAnnotationsMojoDescriptorExtractor.java:106)
	at org.apache.maven.tools.plugin.scanner.DefaultMojoScanner.populatePluginDescriptor(DefaultMojoScanner.java:108)
	at org.apache.maven.plugin.plugin.AbstractGeneratorMojo.execute(AbstractGeneratorMojo.java:233)