# Working with context in function nodes
**URL:** https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567
**Category:** General
**Created:** [25 December 2019 06:14 UTC](https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567 "2019-12-25T06:14:05Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [25 December 2019 06:14 UTC](https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567/1 "2019-12-25T06:14:05Z")
While working/writing code in some function nodes, it just came to my mind that I'm missing a method/function
I have some code that is used in a simulator that runs several iterations and I would like it to start "clean" every cycle, i.e. with no context variables yet created when a new cycle starts
The value of a variable that is created with, as example, `context.set('age', 25);` can easily be changed but how to delete it? From the menu "Context Data" it is easy but how to from code in a function node. I would like to see a method like `context.del('age');`
The same goes for flow & global
Have I missed some other way of deleting variables in context from code in a function node?
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### Author:  [@bakman2](https://discourse.nodered.org/u/bakman2)
#### Post date: [25 December 2019 08:36 UTC](https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567/2 "2019-12-25T08:36:52Z")
Try ` context.set("age",undefined)`
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [25 December 2019 09:43 UTC](https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567/3 "2019-12-25T09:43:16Z")
Dear Bakman, thank you very much! It works fine as you proposed!!!
Maybe not that obvious,,,having a del method is maybe more user friendly, for future NR releases???
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### Author:  [@bakman2](https://discourse.nodered.org/u/bakman2)
#### Post date: [25 December 2019 10:28 UTC](https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567/4 "2019-12-25T10:28:26Z")
Then i would opt for `context.unset("age")` instead.
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [25 December 2019 10:29 UTC](https://discourse.nodered.org/t/working-with-context-in-function-nodes/19567/5 "2019-12-25T10:29:12Z")
Even better 😉