How to pass more than one parameter for Invocable Methods with using flow

Question

@InvocableMethod annotation is not allowing to pass two parameters. i want to pass parameter in my rest api can any one plz tell me where i need to do changes in my code here my code

public class TwilioSendSMS {
    @InvocableMethod(label='Send Message')
    public static void sendSms(){            
        String phNumber ;        
        String accountSid = 'xxxxxxxxxxxxxxxxxxxxx';        
        String token = 'xxxxxxxxxxxxxxxxxxx';        
        String fromPhNumber = '+19xxxxxxxxxx';           
        String smsBody;       
        HttpRequest req = new HttpRequest();        
        req.setEndpoint('https://api.twilio.com/2010-04-01/Accounts/'+accountSid+'/SMS/Messages.json');        
        req.setMethod('POST');        
        String VERSION  = '3.2.0';              
        req.setHeader('Accept', 'application/json');        
        req.setHeader('Accept-Charset', 'utf-8');        
        req.setHeader('Authorization','Basic '+EncodingUtil.base64Encode(Blob.valueOf(accountSid+':' +token))); 
        req.setHeader('Content-Type', '"application/x-www-form-urlencoded"'); 
        req.setBody('To='+EncodingUtil.urlEncode(phNumber,'UTF-8')+'&From='+EncodingUtil.urlEncode(fromPhNumber,'UTF-8')+'&Body='+smsBody);        
        Http http = new Http();        
        HTTPResponse res = http.send(req);        
        System.debug(res.getBody());        
        if(res.getStatusCode()==201) 
        System.Debug('Message sending Successful');        
        else{            
            System.Debug('Message sending Unsuccessful');
        }        
    } 
}

Answer 1

First you need to create a new apex class, with as many attributes as parameters you need to pass to your @InvocableMethod method:

public class Requests {
  @InvocableVariable
  public String param1;
  @InvocableVariable
  public String param2;
}

then all you need to do is change your method's signature to take a list of Requests objects, something like this:

@InvocableMethod(label='Send Message')
public static void sendSms(List<Requests> reqs){
   // access properties values
   String val1 = reqs.get(0).param1;
   String val2 = reqs.get(0).param2;
}

And last, when you go to your flow, and select your apex action, you can enable the parameters you need to pass:

Hope this help!