modifyConfigParamsSmartApp

dthFunctions.groovy

//Function called when the command of the Custom Capability is executed (from the app, API or SmartApp)
def setAttr(String arg){
log.trace("attr ${arg}")
	sendEvent(name:"attr",value:arg)
    state.configValue = 0
    switch(arg){
    	case 'option1':
        	state.configValue= 20
            break;
        case 'option2':
        	state.configValue= 30
            break;
         case 'option3':
        	state.configValue= 40
            break;	
    }
}

//Send the config parameter in the wakeUp notification because sleepy devices don't receive them unless they're awake
def zwaveEvent(physicalgraph.zwave.commands.wakeupv2.WakeUpNotification cmd) {
log.trace("WakeUpNotification")
	def cmds = []
	//...
  if(state.configValue!=0){
	  //this parameter is for the clear motion time (unit:seconds)
    cmds += secure(zwave.configurationV1.configurationSet(parameterNumber: 2, size: 2, scaledConfigurationValue: state.configValue))
  }
	cmds += secure(zwave.wakeUpV2.wakeUpNoMoreInformation())
	[result, response(cmds)]
}

smartapp.js

'use strict';

const express = require('express');
const bodyParser = require('body-parser');
const SmartApp = require('@smartthings/smartapp');
require('dotenv').config();

const server = module.exports = express();
server.use(bodyParser.json());

const app = new SmartApp()

/* Handles lifecycle events from SmartThings */
server.post('/', async (req, res) => {
    app.handleHttpCallback(req, res);
});

/* Defines the SmartApp */
app.enableEventLogging(2)  // Log and pretty-print all lifecycle events and responses
    .configureI18n()      // Use files from locales directory for configuration page localization
    .page('mainPage', (context, page, configData) => {
        page.section('sensors',section => {
            section.deviceSetting('switchd').capabilities(['switch']).permissions(['r','w','x']).required(false);
            section.deviceSetting('sensor').capabilities(['motionSensor']).permissions(['r','w','x']).required(false);
        })
    })
    .updated(async (context, updateData) => {
        await context.api.subscriptions.unsubscribeAll();
        return Promise.all([
            context.api.subscriptions.subscribeToDevices(context.config.switchd, 'switch', 'switch.on', 'openDeviceEventHandler')
        ])
    })
    .subscribedEventHandler('openDeviceEventHandler', (context, deviceEvent) => {
        let commandP =  {
            capability: "xxx.listExample",
            command: "setAttr",
            arguments: ["option1"],
        }
        return context.api.devices.sendCommands(context.config.sensor, [commandP]);
    });
/* Starts the server */
let port = process.env.PORT;
server.listen(port);
console.log(`Open: http://127.0.0.1:${port}`);