# \[BUG-13551\] Wildcards in registerWriteHandler

**URL:** <https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066>\
**Category:** Module Development\
**Created:** [April 11, 2019, 8:21pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066 "2019-04-11T20:21:47Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![THK](https://avatars.discourse-cdn.com/v4/letter/t/71e660/32.png) [@THK](https://forum.inductiveautomation.com/u/THK)\
**Post date:** [April 11, 2019, 8:21pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/1 "2019-04-11T20:21:47Z")

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I am trying to use wildcards to create a write handler callback in ignition 8.

For a given tag “THK\_DEV/Amplitude”

This callback gets triggered  
provider.registerWriteHandler(“THK\_DEV/Amplitude”, new WriteHandler() { …

However when using wildcards nothing gets triggered  
provider.registerWriteHandler(“THK\_DEV/\*”, new WriteHandler() { …

I have even tried an empty string as well as “\*” for the tag path but I cant get an wildcard usage to work.

I am following the documentation from [http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.0-beta/index.html](http://files.inductiveautomation.com/sdk/javadoc/ignition80/8.0.0-beta/index.html)

- The path may end with a wildcard to accept writes for anything under the location (for example “path/to/\*”).
- A null/empty path will register the handler for all tags.
- The most specific write handler is called, and others will not be called.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [April 11, 2019, 8:46pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/2 "2019-04-11T20:46:10Z")

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You’re using a `ManagedTagProvider` on 8.0, right?

Unfortunately it looks like that bit of documentation that says you can use a wildcard path is pure fantasy.

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<div class="post-metadata">

**Author:** ![THK](https://avatars.discourse-cdn.com/v4/letter/t/71e660/32.png) [@THK](https://forum.inductiveautomation.com/u/THK)\
**Post date:** [April 12, 2019, 12:21pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/3 "2019-04-12T12:21:35Z")

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Kevin, yes I am using 8. Is there any plan to implement the wildcard functionality?

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [April 12, 2019, 3:54pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/4 "2019-04-12T15:54:15Z")

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We’ll try to look at this soon but there’s some other higher priority stuff going on right now.

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**Author:** ![Colby.Clegg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/colby.clegg/32/3282_2.png) [@Colby.Clegg](https://forum.inductiveautomation.com/u/Colby.Clegg)\
**Post date:** [May 21, 2019, 9:20pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/5 "2019-05-21T21:20:05Z")

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This will be fixed for 8.0.3. Should be in the nightly build within a few days, we’ll post back when it’s up.

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<div class="post-metadata">

**Author:** ![Colby.Clegg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/colby.clegg/32/3282_2.png) [@Colby.Clegg](https://forum.inductiveautomation.com/u/Colby.Clegg)\
**Post date:** [May 23, 2019, 8:14pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/6 "2019-05-23T20:14:59Z")

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Hi,

This was merged in yesterday, 5/22, so it should be working in today’s nightly build.

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<div class="post-metadata">

**Author:** ![THK](https://avatars.discourse-cdn.com/v4/letter/t/71e660/32.png) [@THK](https://forum.inductiveautomation.com/u/THK)\
**Post date:** [June 5, 2019, 2:28pm UTC](https://forum.inductiveautomation.com/t/bug-13551-wildcards-in-registerwritehandler/24066/7 "2019-06-05T14:28:31Z")

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Thanks, I will try it out.