Question: I was wondering, is it possible to have for instance a jenkins multijob that contains a "job" select input parameter ?

I want to create a multijob that : 

1 - run a job A

2 - run the selected job (for instance "Hello\_world")

3 - run job B

Answer: 
Finally i got this right, The way might be some what different but it work for me !!!

Here is the code for the same.

```
AttributeUpdates: {
                     Address2: 
                     {
                        Action: "DELETE"
                     },
                  }

```

And then i am adding the value on the condition.

```
if (propertyObj.address2) {
        params.AttributeUpdates.address2 = {
            Value: {
                S: propertyObj.address2
            },
            Action: "PUT"
        }
    }

```

Thank you to all from bottom of my heart :)who tried to help me, Cheers !!!
I just pass nulls. Here's my NodeJS script for loading data from file into DynamoDB, I just use ternaries to avoid empty strings.

```js
var AWS = require("aws-sdk");
var fs = require('fs');

// Make sure we got a filename on the command line.
if (process.argv.length < 3) {
  console.log('Usage: node ' + process.argv[1] + ' FILENAME');
  process.exit(1);
}

var filename = process.argv[2];

AWS.config.update({
    region: "us-west-2",
    //endpoint: "http://localhost:8000"
});

var docClient = new AWS.DynamoDB.DocumentClient();

console.log("Importing Addresses into DynamoDB. Please wait.");

var allObjs = JSON.parse(fs.readFileSync(filename, 'utf8'));
allObjs.forEach(function(obj) {
    var params = {
        TableName: "Address",
        Item: {
            "address_detail_pid":  obj.address_detail_pid,
            "flat_type":  obj.flat_type == '' ? null : obj.flat_type,
            "flat_number":  obj.flat_number == '' ? null : obj.flat_number,
            "level_type":  obj.level_type == '' ? null : obj.level_type,
            "level_number":  obj.level_number == '' ? null : obj.level_number,
            "number_first":  obj.number_first == '' ? null : obj.number_first,
            "street_name":  obj.street_name == '' ? null : obj.street_name,
            "street_type_code":  obj.street_type_code == '' ? null : obj.street_type_code,
            "locality_name":  obj.locality_name == '' ? null : obj.locality_name,
            "state_abbreviation":  obj.state_abbreviation == '' ? null : obj.state_abbreviation,
            "postcode":  obj.postcode == '' ? null : obj.postcode,
            "longitude":  obj.longitude == '' ? null : obj.longitude,
            "latitude":  obj.latitude == '' ? null : obj.latitude
        }
    };

    docClient.put(params, function(err, data) {
       if (err) {
           console.error("Unable to add obj", obj.address_detail_pid, ". Error JSON:", JSON.stringify(err, null, 2));
       } else {
           console.log("PutItem succeeded:", obj.address_detail_pid);
       }
    });
});

```