How to get a node list according to the parameter from the previous pipeline job in Jenkins?

[Jack Andy]

I got 2 pipeline jobs.

Jenkinsfile in the first one:

slave_list = ['test01', 'test02']

build job: 'pipeline-test2', parameters: [[$class: 'NodeParameterValue', name: 'node_list', labels: slave_list, nodeEligibility: [$class: 'AllNodeEligibility']]]

Jenkinsfile in the second one,and job name is "pipeline-test2":

echo node_list

for (slave in node_list) {

    echo slave

}

the first job triggers the second one, and the output of the second job is:

[Pipeline] echo

test01

[Pipeline] echo

t

[Pipeline] echo

e

[Pipeline] echo

s

[Pipeline] echo

t

[Pipeline] echo

0

[Pipeline] echo

1

why the second job receives only one parameter:test01? I want the second job to receive a list(slave_list) from the first one? and how to complete it? thanks!