- (IBAction)btnUpdateComplication:(id)sender {

    //create a dictionary with value of UITextField
    NSDictionary *userInfo = @{@"data" : txtSend.text};
    if(WCSession.isSupported){
        WCSession *session = [WCSession defaultSession];
        session.delegate = self;
        [session activateSession];

        if(session.reachable){
            if(session.paired){
                [session transferCurrentComplicationUserInfo:userInfo];

                //update the WKInterfacelabel
                complicationLabel.text = [NSString stringWithFormat:@"UserInfo: %@",[userInfo objectForKey:@"data"]];
            }
        }
        else {
            complicationLabel.text = @"Session Not Reachable";
        }
    }
}

- (void)awakeWithContext:(id)context {
    [super awakeWithContext:context];

    // Activate the WCSession
    if ([WCSession isSupported]) {
        WCSession *session = [WCSession defaultSession];
        session.delegate = self;
        [session activateSession];
        NSLog(@"WCSession is supported");
    }
}


- (void)session:(WCSession *)session didReceiveUserInfo:(NSDictionary<NSString *,id> *)userInfo {

    dispatch_async(dispatch_get_main_queue(), ^{

        //store the dictionary to a variable
        self.lastReceivedUserInfo = userInfo;

        //Q1) but how do I pass the userInfo dictionary to the ComplicationController

        //update the WKInterfaceLabel
        [self.userInfoLabel setText:[NSString stringWithFormat:@"UserInfo: %@",[userInfo objectForKey:@"data"]]];

    });


    //Q2) how do i update the complication when the session isn't active

    //trigger the Complication to update
    CLKComplicationServer *server = [CLKComplicationServer sharedInstance];
    for (CLKComplication *complication in server.activeComplications) {
        [server reloadTimelineForComplication:complication];
    }

}

//setup the placeholder for the complication
- (void)getLocalizableSampleTemplateForComplication:(CLKComplication *)complication withHandler:(void(^)(CLKComplicationTemplate * __nullable complicationTemplate))handler {
    if (complication.family == CLKComplicationFamilyModularLarge) {
        CLKComplicationTemplateModularLargeTallBody *complicationTemplate = [[CLKComplicationTemplateModularLargeTallBody alloc] init];
        [complicationTemplate setHeaderTextProvider: [CLKSimpleTextProvider textProviderWithText:@"HeaderText"]];
        [complicationTemplate setBodyTextProvider: [CLKSimpleTextProvider textProviderWithText:@"Second Line"]];
        handler(complicationTemplate);
    } else {
        handler(nil);
    }
}

// this method is called when the updateComplicationServer method reloads timeline for the active complication.
 - (void)getCurrentTimelineEntryForComplication:(CLKComplication *)complication withHandler:(void(^)(CLKComplicationTimelineEntry * __nullable))handler {

     //this will just update the complication with the current time when update received.
     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
     [dateFormatter setDateFormat:@"HH:mm:ss"];
     strCurrentTime = [dateFormatter stringFromDate:[NSDate date]];

   //Q3. Here I need to get the userInfo and update the compllication

    NSDate *now = [NSDate date];
    if (complication.family == CLKComplicationFamilyModularLarge) {
        CLKComplicationTemplateModularLargeTallBody *complicationTemplate =
                        [[CLKComplicationTemplateModularLargeTallBody alloc] init];
        [complicationTemplate setHeaderTextProvider: [CLKSimpleTextProvider textProviderWithText:@"Last Refresh Time:"]];
        complicationTemplate.bodyTextProvider = [CLKSimpleTextProvider textProviderWithText:strCurrentTime];

        //this is the line I want to update
        //complicationTemplate.bodyTextProvider = [CLKSimpleTextProvider textProviderWithText:myText];

        CLKComplicationTimelineEntry *entry = [CLKComplicationTimelineEntry entryWithDate:now complicationTemplate:complicationTemplate];
        handler(entry);
    } else {
        handler(nil);
    }
 }