pipeline {
    agent any
    parameters {
        string(name: 'PERSON', defaultValue: 'MrJenkins', description: 'Who should I say hello to?')
        password(name: 'PASSWORD', defaultValue: '', description: 'Enter a password')
    }
    stages {
        stage('Example') {
            steps {
                echo "Hello ${params.PERSON}"
            }
        }
    }
}

[Pipeline] }
[Pipeline] // stage
[Pipeline] withEnv
Warning: A secret was passed to "withEnv" using Groovy String interpolation, which is insecure.
		 Affected argument(s) used the following variable(s): [PASSWORD]
		 See https://jenkins.io/redirect/groovy-string-interpolation for details.
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Example)
[Pipeline] echo
Warning: A secret was passed to "echo" using Groovy String interpolation, which is insecure.
		 Affected argument(s) used the following variable(s): [PASSWORD]
		 See https://jenkins.io/redirect/groovy-string-interpolation for details.
HelloMrJenkins
[Pipeline] }