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jenkins pipeline - parameter from function - Required context class hudson.FilePath is missing

@NonCPS
def getLastRelease() {
    def RES = sh(script: '''cat version''', returnStdout: true).trim()
    return RES
pipeline{
    parameters {
            choice(name: 'RELEASE_VERSION', choices: '${getLastRelease()}', description: 'desc')
But for some reason it does not work - if i try:
'${getLastRelease()}'
I am getting error:
  
durable-73075a87/script.sh: line 1: ${getLastRelease()}: bad
  substitution
if i use:
"${getLastRelease()}"
I am getting error:
  
[Pipeline] Start of Pipeline [Pipeline] sh [Pipeline] End of Pipeline
  org.jenkinsci.plugins.workflow.steps.MissingContextVariableException:
  Required context class hudson.FilePath is missing Perhaps you forgot
  to surround the code with a step that provides this, such as: node,
  dockerNode
                I am not completely sure if you can or want to provide dynamic choices for user input parameters. Default values sure, but choices not so much.
– Matt Schuchard
                Oct 8, 2019 at 14:19
                I want to get the release version, which is actually generated by bash script, and i want it to be default option. The script is correct and I am able to echo this value inside the pipeline RES = getLastRelease() echo "${RES}" But for some reason it does not work for parameter
– Wojtas.Zet
                Oct 8, 2019 at 14:24
Remove the annotation @NonCPS, since NonCPS functions should not use Pipeline steps internally.
Since you execute shell scripts, wrap the expressions in your function in a node {...} block.
Simply invoke the function getLastRelease() inside the choice the parameter without the quotes or the curly braces.
Working sample:
def getLastRelease() {
    node {
        def RES = sh (script: 'cat version', returnStdout: true).trim()
        return RES
pipeline {
    agent any
    parameters {
        choice(name: 'RELEASE_VERSION', choices: [getLastRelease(), <more choices, ...>], description: 'desc')
        
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