Pass Env Variable for Builders in Jenkins files

Jenkins setup: We have Setup Jenkins using Helm , we are using Jcasc for Creating Jobs.
Currently im passing env variables from DSL Files which gets reffered in Jenkinsfile as below

  environmentVariables {
    env('CLUSTER', 'AmStackEuPreprod01GreenEksCluster')
    env('CHART_VERSION', '1.7.1')

But i also want to pass my Builder Name cd-k8s-1-29-builder from jenkins DSL File ,is this possible?

pipeline {
    agent {
        kubernetes {
            inheritFrom 'cd-k8s-1-29-builder'
            defaultContainer 'builder'
    environment {