# In node red how to use drop down node for getting multiple values result store

**URL:** https://discourse.nodered.org/t/in-node-red-how-to-use-drop-down-node-for-getting-multiple-values-result-store/8704
**Category:** General
**Created:** [7 March 2019 11:57 UTC](https://discourse.nodered.org/t/in-node-red-how-to-use-drop-down-node-for-getting-multiple-values-result-store/8704 "2019-03-07T11:57:51Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![VIKRAMAS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/vikramas/32/3955_2.png) [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)
#### Post date: [7 March 2019 11:57 UTC](https://discourse.nodered.org/t/in-node-red-how-to-use-drop-down-node-for-getting-multiple-values-result-store/8704/1 "2019-03-07T11:57:51Z")

</div>

I wanted 3 drop down list, based on 1st drop down selection 2nd drop down list options should come, and based on 2nd 3rd drop down list should come. The payload is

```auto
[{
		"controller": "S000",
		"sensorConf": [{
				"sensor": "s"
			},
			{
				"sensor": "s2"
			}
		]
	},
	{
		"controller": "S001",
		"sensorConf": [{
				"sensor": "s3"
			},
			{
				"sensor": "s4"
			}
		]
	}
]

```

So after calling API I will get below response, So I placed one drop down node for controller id seletion(ex c1), after that I wanted to choose from array of sensorConf sensor parameter( ex s3).

 ![test1](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/3/384eb1259c0488c54816fb325b3e23687fa6ea6a.png)

In the above flow how to save the selection result for each request by user. As I have to request again API to fetch the sensorConf deatils(sensor).

Which variable I have to use **context variable** , **Flow variable** , **Global variable**. If I use global then it is global not based on user selection.