# Filter false payloads
**URL:** https://discourse.nodered.org/t/filter-false-payloads/57359
**Category:** General
**Created:** [27 January 2022 18:06 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359 "2022-01-27T18:06:23Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [27 January 2022 18:06 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359/1 "2022-01-27T18:06:23Z")
Hi guys, 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?
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [27 January 2022 18:40 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359/3 "2022-01-27T18:40:04Z")
You will need to use multiple nodes. there a various ways.
here is an example the use a join node set to timeout after 100ms, the switch node then determines if the distinct count is 1, and passes the msg if so. The change node just returns the first unchanged message within timeout.
eg.
```auto
[{"id":"a0958109.bf19d","type":"inject","z":"c791cbc0.84f648","name":"single message","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"true","payloadType":"bool","x":230,"y":1840,"wires":[["9ec224a5.5fef9"]]},{"id":"9ec224a5.5fef9","type":"join","z":"c791cbc0.84f648","name":"","mode":"custom","build":"array","property":"payload","propertyType":"msg","key":"topic","joiner":"\\n","joinerType":"str","accumulate":false,"timeout":"0.1","count":"","reduceRight":false,"reduceExp":"","reduceInit":"","reduceInitType":"","reduceFixup":"","x":530,"y":1900,"wires":[["e34b6332.fcae08"]]},{"id":"e34b6332.fcae08","type":"switch","z":"c791cbc0.84f648","name":"","property":"$count($distinct(payload))","propertyType":"jsonata","rules":[{"t":"eq","v":"1","vt":"num"}],"checkall":"true","repair":false,"outputs":1,"x":660,"y":1900,"wires":[["c90747bf.ad5b18"]]},{"id":"f4e7bdc1.853ad8","type":"trigger","z":"c791cbc0.84f648","name":"","op1":"true","op2":"false","op1type":"bool","op2type":"bool","duration":"50","extend":false,"overrideDelay":false,"units":"ms","reset":"","bytopic":"all","topic":"topic","outputs":1,"x":200,"y":2020,"wires":[["9ec224a5.5fef9"]]},{"id":"d952d96d.4b965","type":"trigger","z":"c791cbc0.84f648","name":"","op1":"true","op2":"true","op1type":"bool","op2type":"bool","duration":"50","extend":false,"overrideDelay":false,"units":"ms","reset":"","bytopic":"all","topic":"topic","outputs":1,"x":200,"y":1920,"wires":[["9ec224a5.5fef9"]]},{"id":"c90747bf.ad5b18","type":"change","z":"c791cbc0.84f648","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload[0]","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":840,"y":1900,"wires":[["2502e681.e4e682"]]},{"id":"53fc6dc.ec49f14","type":"inject","z":"c791cbc0.84f648","name":"two different messages","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"2","payloadType":"num","x":210,"y":1980,"wires":[["f4e7bdc1.853ad8"]]},{"id":"b7212981.b88128","type":"inject","z":"c791cbc0.84f648","name":"two messages identical","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"2","payloadType":"num","x":210,"y":1880,"wires":[["d952d96d.4b965"]]},{"id":"2502e681.e4e682","type":"debug","z":"c791cbc0.84f648","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":730,"y":1960,"wires":[]}]
```
---
### Author:  [@ghayne](https://discourse.nodered.org/u/ghayne)
#### Post date: [27 January 2022 18:50 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359/4 "2022-01-27T18:50:56Z")
Ignore my first post, try this:
```auto
[{"id":"e413a61d9480ecbb","type":"tab","label":"Flow 6","disabled":false,"info":"","env":[]},{"id":"e6d0f034ca19ab8b","type":"rbe","z":"e413a61d9480ecbb","name":"","func":"rbe","gap":"","start":"","inout":"out","septopics":true,"property":"payload","topi":"topic","x":260,"y":120,"wires":[["6d9b3008a343540a"]]},{"id":"6d9b3008a343540a","type":"trigger","z":"e413a61d9480ecbb","name":"","op1":"","op2":"","op1type":"nul","op2type":"payl","duration":"100","extend":true,"overrideDelay":false,"units":"ms","reset":"","bytopic":"all","topic":"topic","outputs":1,"x":520,"y":120,"wires":[[]]}]
```
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### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [27 January 2022 19:21 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359/5 "2022-01-27T19:21:06Z")
Amazing , Thanks
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### Author:  [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)
#### Post date: [27 January 2022 19:22 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359/6 "2022-01-27T19:22:04Z")
Thank you, for this and my previous post.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [28 March 2022 19:22 UTC](https://discourse.nodered.org/t/filter-false-payloads/57359/7 "2022-03-28T19:22:33Z")
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