Access global map variable inside active choice reactive reference parameter - jenkins

Question

I am trying to set a global map variable in a jenkins declarative pipeline. I am trying to access it inside an Active Choice Reactive Reference parameter. I tried many ways to achieve this but nothing worked.
Below is my sample Pipeline.
def sampleMap= [
'students' : ['12312312'],
'teachers' : ['145436436']
]
pipeline {
agent any
stages {
stage('set params') {
steps{
script {
properties([
parameters([
[
$class: 'CascadeChoiceParameter',
choiceType: 'PT_SINGLE_SELECT',
description: '',
filterLength: 1,
filterable: false,
name: 'Type',
randomName: 'choice-parameter-1325654724334254',
referencedParameters: '',
script: [
$class: 'GroovyScript',
fallbackScript: [
classpath: [],
sandbox: true,
script: ''
], script: [
classpath: [],
sandbox: true,
script: '''
def choices = []
choices.add('students')
choices.add('teachers')
return choices'''
]
]
],
[
$class: 'DynamicReferenceParameter',
choiceType: 'ET_FORMATTED_HTML',
description: '',
name: 'value',
randomName: 'choice-parameter-14347325234254',
referencedParameters: 'Type',
script: [
$class: 'GroovyScript',
fallbackScript: [
classpath: [],
sandbox: true,
script: ""
],
script: [
classpath: [],
sandbox: true,
script: '''
def result= ${sampleMap.get(Type)}
return """<input name=\"value\" value=\"${result}\" class=\"setting-input\" type=\"text\">"""
'''
]
],
omitValueField: true
]
])
])
}
}
}
}
As per above script, I have a global Map variable with list of students and list of teachers. I have two build parameters named as Type and value. Type is a dropdown with values 'students' and 'teachers' . Based on the dropdown selection, I want to refer to the global map variable and access it's respective value in another build parameter.
It seems like the active choice parameter is unable to access global variables. Or is that a syntax issue?
Can anyone help?
Thanks!

Answer 1

You should pass whole map into script and call it:
[$class: 'CascadeChoiceParameter',
choiceType: 'PT_SINGLE_SELECT',
filterLength: 1,
filterable: false,
name: 'value',
referencedParameters: 'Type',
script: [$class: 'GroovyScript',
fallbackScript: [
classpath: [],
sandbox: true,
script: 'return ["ERROR"]'
],
script: [
classpath: [],
sandbox: true,
script: """
def sampleMap = ${sampleMap.inspect()}
return sampleMap.get(Type)
""".stripIndent()
]
]
]