在安装了“版本号插件”的Jenkinsfile中尝试此步骤：

    stage("Build") {
        echo "Building..."
        TAG = ${BUILD_DATE_FORMATTED, "yyyyMMdd"}-develop-${BUILDS_TODAY}
        sh "docker build -t $IMAGE:$TAG ."
    }

并得到此错误：

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 15: unexpected token: BUILD_DATE_FORMATTED @ line 15, column 15.
           TAG=${BUILD_DATE_FORMATTED, "yyyy-MM-dd"}-develop-${BUILDS_TODAY}
                 ^
1 error

在Jenkinsfile中使用此插件的正确方法是什么？