# Need RBE opposite

**URL:** <https://discourse.nodered.org/t/need-rbe-opposite/56141>\
**Category:** General\
**Created:** [5 January 2022 11:34 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141 "2022-01-05T11:34:12Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![RGebel](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/rgebel/32/18002_2.png) [@RGebel](https://discourse.nodered.org/u/RGebel)\
**Post date:** [5 January 2022 11:34 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/1 "2022-01-05T11:34:12Z")

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looking for a node that does the opposite as  
RBE. I am looking for a node that will only pass if the last two messages are the same.  
Does anyone Know of any such NODE?

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [5 January 2022 11:38 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/2 "2022-01-05T11:38:46Z")

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If just comparing a simple payload then the switch node can do a compare with previous value.

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**Author:** ![RGebel](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/rgebel/32/18002_2.png) [@RGebel](https://discourse.nodered.org/u/RGebel)\
**Post date:** [5 January 2022 11:46 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/3 "2022-01-05T11:46:29Z")

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How do i Maintain the previous message?

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**Author:** ![knolleary](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/knolleary/32/3_2.png) [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Post date:** [5 January 2022 11:48 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/4 "2022-01-05T11:48:58Z")

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![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/3/33ed14f6578884d36d1eec1d91b4c2700fc6e68f.png)

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [5 January 2022 11:49 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/5 "2022-01-05T11:49:51Z")

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If using the switch would do you then you don't need to...  
If you want to write your own function then see the storing data section here - [Writing Functions : Node-RED](https://nodered.org/docs/user-guide/writing-functions#storing-data)

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**Author:** ![RGebel](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/rgebel/32/18002_2.png) [@RGebel](https://discourse.nodered.org/u/RGebel)\
**Post date:** [5 January 2022 12:05 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/6 "2022-01-05T12:05:19Z")

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what node is that?

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**Author:** ![RGebel](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/rgebel/32/18002_2.png) [@RGebel](https://discourse.nodered.org/u/RGebel)\
**Post date:** [5 January 2022 12:17 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/7 "2022-01-05T12:17:26Z")

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got it i will check it out thanks!

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [5 January 2022 12:25 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/8 "2022-01-05T12:25:03Z")

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The switch node…

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [19 January 2022 12:25 UTC](https://discourse.nodered.org/t/need-rbe-opposite/56141/9 "2022-01-19T12:25:28Z")

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