how could roleat change with position(name of roleid) string change

const {  roleMention , SlashCommandBuilder, PermissionFlagsBits, EmbedBuilder, WebhookClient } = require('discord.js');
const {  RoleID, webhookId, webhookToken } = require('../../config/plugins/promote.json');
const webhookClient = new WebhookClient({ id: webhookId, token: webhookToken });

module.exports = {
    data: new SlashCommandBuilder()
        .setName('promote')
        .setDescription('Select a member and promote them.')
        .addUserOption(option =>
            option
                .setName('target')
                .setDescription('The member to promote')
                .setRequired(true))
        .addStringOption(option =>
            option
                .setName('position')
                .setDescription('The position for pormoting')
        .setRequired(true)
                .addChoices(
                    { name: 'Event Team', value: 'CC' },
                    { name: 'Media Team', value: 'Media' },
                    { name: 'Driver', value: 'Driver' },
                    { name: 'Driver Trainee', value: 'Trainee' },
                ))
        .setDefaultMemberPermissions(PermissionFlagsBits.ManageRoles)
        .setDMPermission(false),
  async execute(interaction) {
        const member = interaction.options.getMember('target');
        const avatarURL = member.user.displayAvatarURL({size:4096});
        const userID = member.id;
        const position = interaction.options.getString('position');
        const success = new EmbedBuilder()
        .setColor('#AC00FF')    
        .setThumbnail(avatarURL)
        .setTitle(`Member Role Change`)
        .setDescription(`**<@${userID}>** has promoted to **${RoleID.position}**`)
        const error = new EmbedBuilder()
        .setColor('Red')    
        .setTitle(`Error`)
        .setDescription(`Commmand error`);
        function CC() {
            member.roles.add(RoleID.Devide1);
            member.roles.add(RoleID.CC);
            webhookClient.send({
                embeds: [success.setImage('https://cdn.discordapp.com/attachments/929319867457347636/1103853149745332285/ZmT1EEV2.png')],
            });
            interaction.reply({ content: 'Success!', ephemeral: true });
        }
        function Driver() {
            member.roles.add(RoleID.Driver);
            member.roles.remove(RoleID.Trainee);
            webhookClient.send({
                embeds: [success],
            });
            interaction.reply({ content: 'Success!', ephemeral: true });
        }
        function Media() {
            member.roles.add(RoleID.Devide1);
            member.roles.add(RoleID.Media);
            webhookClient.send({
                embeds: [success],
            });
            interaction.reply({ content: 'Success!', ephemeral: true });
        }
        function Trainee() {
            member.roles.add(RoleID.Devide2);
            member.roles.add(RoleID.Trainee);
            webhookClient.send({
                embeds: [success.setDescription(`**<@${userID}>** joins Federal Transport VTC as **<@${roleat}>**`)],
            });
            interaction.reply({ content: 'Success!', ephemeral: true });
        }
        if (position == 'CC') {
            CC();
        } 
        else if (position == 'Media') {
            Media();
        } 
        else if (position == 'Driver') {
            Driver();
        } 
        else if (position == 'Trainee'){
            Trainee();
        } 
        else
        {
            interaction.reply(
                {embed:[error],
                });
            return;
    }
  },
};