如何在运行时通过变量在jenkins中传递电子邮件

pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                // 构建过程
                sh 'export EMAIL_RECIPIENT="example@example.com"'
            }
        }
        stage('Send Email') {
            steps {
                script {
                    // 发送电子邮件
                    emailext subject: 'Build Notification',
                              body: "The build has completed successfully.",
                              to: env.EMAIL_RECIPIENT,
                              from: 'jenkins@yourdomain.com'
                }
            }
        }
    }
}