# Payload change scan
**URL:** https://discourse.nodered.org/t/payload-change-scan/57353
**Category:** General
**Created:** [27 January 2022 16:32 UTC](https://discourse.nodered.org/t/payload-change-scan/57353 "2022-01-27T16:32:10Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [27 January 2022 16:32 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/1 "2022-01-27T16:32:10Z")
Hi guys. I'm looking for a solution in which the value of payload is sent to the debug node if there's a change in value. Otherwise, nothing is sent to the debug node.
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### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [27 January 2022 16:34 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/2 "2022-01-27T16:34:17Z")
Check the filter/rbe node, or the switch node set to `!= previous`
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### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [27 January 2022 16:35 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/3 "2022-01-27T16:35:37Z")
Thank you
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### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [27 January 2022 17:35 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/4 "2022-01-27T17:35:57Z")
Now I have to filter false payloads out. I'd like to have the payload values at the output If the payload value did not change over a period of time, e.g. on a 100 ms period or longer, otherwise nothing at the output, Can you please let me know how?
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [27 January 2022 22:00 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/5 "2022-01-27T22:00:10Z")
You can do that with a Filter node followed by a Trigger node.
```auto
[{"id":"b3a5827c1d8e0c08","type":"rbe","z":"bdd7be38.d3b55","name":"","func":"rbe","gap":"","start":"","inout":"out","septopics":true,"property":"payload","topi":"topic","x":290,"y":2560,"wires":[["8846cd57dfd88dcf"]]},{"id":"8846cd57dfd88dcf","type":"trigger","z":"bdd7be38.d3b55","name":"","op1":"","op2":"","op1type":"nul","op2type":"payl","duration":"100","extend":true,"overrideDelay":false,"units":"ms","reset":"","bytopic":"all","topic":"topic","outputs":1,"x":460,"y":2560,"wires":[["03ae2eb3172f3f16"]]},{"id":"03ae2eb3172f3f16","type":"debug","z":"bdd7be38.d3b55","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":630,"y":2560,"wires":[]}]
```
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### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [28 January 2022 15:58 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/6 "2022-01-28T15:58:31Z")
Thank you so much
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [11 February 2022 15:58 UTC](https://discourse.nodered.org/t/payload-change-scan/57353/7 "2022-02-11T15:58:39Z")
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