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Multi-System Reactor

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  • Category Topic Guide -- Read Before Posting

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  • Reactor (Multi-System/Multi-Hub) Announcements

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    toggledbitsT
    Reactor build 25310 IMPORTANT: This build was patched and re-released to address a compatibility issue for Home Assistant 2025.11. If you pulled this release before 1pm Eastern Standard Time (18:00 UTC) on Friday Nov 7, please re-pull/re-install this build to get those fixes. Expressions: restore ability (lost in 25304) to define a custom function in a global variable/expression and have it be available to other expressions. HassController: Bless HA to 2025.11.0
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    G
    @toggledbits would this be latest-25310-dc2bb580?
  • [Solved] alarm() in global expression throws error in log.

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    toggledbitsT
    Whew! If that was anything, it was the work of an aging magician. Thanks for sticking with it and supplying good info.
  • [Solved] Define function issue in latest-25304

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    CrilleC
    Super, thank you very much. You're the real MVP!
  • No Upgrade Notification for Build 25308?

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    toggledbitsT
    It's a silent/optional build. I actually do this often, when I roll a build that has a very limited number of fixes to address an issue or issues affecting a very limited audience (i.e. most people would not get any value/changes in the upgrade from the previous build).
  • Strange behavior in MSR latest-25304 with disabled groups in Reaction

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    toggledbitsT
    @therealdb said in Strange behavior in MSR latest-25304 with disabled groups in Reaction: When pressing the button, Can you explain what this means? And please show the entire rule. Edit 2: Never mind. I was focused on the variable and the interpretation of the value, but I see now, that's not what you're looking at... one moment please... Edit 3: OK. That's not a 25304-specific issue... goes back to forever. Will be fixed in next build (soon/today).
  • [Reactor] Variables not updating correctly in latest-25201-2aa18550

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    toggledbitsT
    @tunnus OK. We got that one, too! Thanks for sticking with that process and getting me a lot of good information. Build 25304 is now fully released for all platforms and architectures. Please see the release announcement for a full list of change.
  • The reaction stopped working (Google Nest max playing a video)

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    toggledbitsT
    @Fanan Build 25304 has the necessary changes to support what has changed in Home Assistant. The following is an example action to play media in the new model: The first example in the screen shot below shows how to format the object field that Home Assistant needs as JSON. The second example shows how to use YAML for the field. [image: 1761918113553-eb87b70b-d5d1-4afc-afc3-2e468deb6fe3-image.png]
  • Handling Dead Entities and Renamed Entities

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    PablaP
    @toggledbits interesting, I totally understand the rationale why the controllers act this way. However, I feel like there are times where you’d want to batch update entities. Could this be added into the UI, similar to the purge dead entities action? Maybe an “update entity metadata” action?
  • Strange behavior for MQTT templates using payload and attributes

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    toggledbitsT
    @therealdb said in Strange behavior for MQTT templates using payload and attributes: Never code in a hurry while doing 100 other things Ummm... is there any other way?
  • [MSR] reactor-mqtt-contrib package for additional MQTT templates

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    therealdbT
    25272: Fixes for shelly_scenecontroller to better handle multiple pushes of the same button.
  • HA 2025.9.4 Supported Yet?

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    toggledbitsT
    @CatmanV2 said in The reaction stopped working (Google Nest max playing a video): Tangentially did I miss 2025.9.4 getting blessed in MSR? I've been holding off Generally, if 2025.9.0 or .1 is blessed, the remaining releases are going to contain only small tweaks and bug fixes, and will likely be OK to install (just ignore the warning alert). The biggest risk there is the first release (e.g. 202x.y.0) changing behavior that required me to adapt to in HassController, and a later minor release (e.g. 202x.y.2) addresses some error they made in that first cut and changes/fixes that behavior in a way that's now incompatible with the new HassController changes. Historically, that's pretty rare. The biggest risks are always the first of their monthly releases, where there are long lists of big behavior changes and usually many potentially breaking changes. And yes, please keep the threads on-topic.
  • Rule Set UI bug - RESOLVED

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    toggledbitsT
    Great report. Thank you! Will be fixed in next build.
  • [Reactor] Copy&Paste of Rules

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  • [Reactor] Help with scene controller cycling logic

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    toggledbitsT
    This looks like a job for a finite state machine. An alternate way to tackle this may be to have a state local variable that's just a number/counter that increments when the scene controller button is pushed... Set Variable state = ${{ ( ( state ?#0 } + 1 ) % 3 }}. This will make state cycle through the values 0, 1, 2, 0, 1, 2... Then the reaction has these groups: When state == 0: turn both fans off When state == 1: turn 1 on, 2 off When state == 2: turn 1 off, 2 on [image: 1756482827376-2b5121d9-527f-4151-a719-7859c19bcd89-image.png] It's easy to add a fourth state if you want the option of having both fans on at the same time. I'll leave the changes as an exercise for readers. DM if you need a hint.
  • Stop the MSR by an external switch on Hubitat.

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    Tom_DT
    I would never rely on automation to keep equipment you are working on off. Turn it off at the breaker or disconnect.
  • Expose MSR entities

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    CatmanV2C
    You are both gents! C
  • Comment in Globa Expressions

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    CrilleC
    Maybe not the prettiest way to do it but why not let the rule set the comment followed by the value? Like ”This is set by rule Test”, value
  • Unofficial thread for compatibility

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