# How to do an if with "function"
**URL:** https://discourse.nodered.org/t/how-to-do-an-if-with-function/62728
**Category:** General
**Created:** [17 May 2022 07:15 UTC](https://discourse.nodered.org/t/how-to-do-an-if-with-function/62728 "2022-05-17T07:15:20Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@joonaskng](https://discourse.nodered.org/u/joonaskng)
#### Post date: [17 May 2022 07:15 UTC](https://discourse.nodered.org/t/how-to-do-an-if-with-function/62728/1 "2022-05-17T07:15:20Z")
Hello, my Output is "S7CpuStatusRun" and i want to make an if or something, that is changing the "S7CpuStatusRun" to just "Run" but i dont know how to do that because i have no idea how an if should work like this or what i could use instead of an if
I really hope someone knows the answer, that would really help me
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### Author:  [@bakman2](https://discourse.nodered.org/u/bakman2)
#### Post date: [17 May 2022 07:31 UTC](https://discourse.nodered.org/t/how-to-do-an-if-with-function/62728/2 "2022-05-17T07:31:24Z")
Use a change node. See the documentation: [working with messages](https://nodered.org/docs/user-guide/messages)
You probably want to use a switch node as well to "test" if the received message is 'S7CpuStatusRun' and then use the change node.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [16 July 2022 07:31 UTC](https://discourse.nodered.org/t/how-to-do-an-if-with-function/62728/3 "2022-07-16T07:31:25Z")
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