How to create ami list in jenkins using extendedChoice parameter?

Question

Amazon Web Services

It works:

steps {
            script {   
        def images_ls_output = sh(script: "aws ec2 describe-images --query Images[*].[Name] --owner 111111111111 --region us-east-2 --output=text", returnStdout: true).trim()
        println "${images_ls_output}"
        def image = images_ls_output.tokenize().reverse()
        println "${image}"
            }
         }

It works:

parameters {
        extendedChoice(
            bindings: '',
            defaultValue: 'build',
            description: '',
            groovyClasspath: '',
            groovyScript: '''
            
                    def app_filter = "api.tar"
                    def s3_path = "s3://wpl-artifactory/"
                    def aws_s3_ls_output = "aws s3 ls ${s3_path} --region us-east-2".execute() | [\'sort\', \'-k 1\'].execute() | "grep ${app_filter}".execute() | [\'awk\', \'{ print $NF }\'].execute()
                    def files = aws_s3_ls_output.text.tokenize().reverse()
                    return files

            ''',
            multiSelectDelimiter: ',',
            name: 'BUILD_VERSION',
            quoteValue: false,
            saveJSONParameterToFile: false,
            type: 'PT_SINGLE_SELECT',
            visibleItemCount: 5
        )
}

This does not work:

parameters {
         extendedChoice(
            bindings: '',
            defaultValue: 'build',
            description: '',
            groovyClasspath: '',
            groovyScript: '''
                  
               def images_ls_output = sh(script: "aws ec2 describe-images --query Images[*].[Name] --owner 11111111 --region us-east-2 --output=text" returnStdout: true).trim()
               def image = images_ls_output.tokenize().reverse()
               return image

            ''',
            multiSelectDelimiter: ',',
            name: 'USE_EXISTING_IMAGE',
            quoteValue: false,
            saveJSONParameterToFile: false,
            type: 'PT_SINGLE_SELECT',
            visibleItemCount: 5
        )
}

What could be the reason?
"works" = in the first case, displays the values ​​of the array
"works" = in the second case, displays a list of images for selection in the parameter
"does not work" = in the third case, does NOT display a list of images for selection in the parameter