# Dynamically Filtering Alarm Status

**URL:** <https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115>\
**Category:** General Discussion\
**Created:** [January 26, 2016, 3:58am UTC](https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115 "2016-01-26T03:58:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![ian](https://avatars.discourse-cdn.com/v4/letter/i/bb73d2/32.png) [@ian](https://forum.inductiveautomation.com/u/ian)\
**Post date:** [January 26, 2016, 3:58am UTC](https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115/1 "2016-01-26T03:58:01Z")

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I noticed that when we use “Alarm Status” Component, by default, it will display all the alarms occurred.

While this default behavior ease the initial design a lot, I would also like to have “Alarm Status” Component which are capable of filtering which alarm to be shown based on certain conditions.

I notice that the Ignition Developer Team has sensibly created “Alarm Status” Component with property called “Display Path Filter” which I suppose will help in creating the behaviors I want.

But sadly (shame on me), I do not know how to use it. ☹ Thus, I would like to seek advise from you

Here is my case:

1. I have an Alarm Status Component in an Alarm Status Main Window where the Root Container of the Main Window contains a Custom Property called index, which is of Integer type.

2. Among my tags, I have numerically indexed name tags whose paths are as shown in the following pattern:

```auto
A/B{1}
```

where:

`A is my tag folder
B is the name of my tag
{1} is the index of the tag
`

Thus, if I have a Component which I want it to refer to certain value in that tag path, I could make the Component value bound as Indirect Tag to A/B{1}/SomeOtherPath as Indirect Tag Path where {1} is simply referred to the Root Container.index, and things will go well.

But as I did the same to my Alarm Status, I failed miserably. ![:/](https://us1.discourse-cdn.com/inductiveautomation/original/1X/8e510869ae26fbd7ab76e1e731ceea2054ef109c.gif "Hrm") Now my question is: How can I use Display Path Filter (or any other filter/binding/whatever else you deem appropriate) to accomplish my goal? I want to show limited alarm based on the index in my Alarm Status Window

Thanks!

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**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\
**Post date:** [January 26, 2016, 12:53pm UTC](https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115/2 "2016-01-26T12:53:20Z")

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The Display Filter supports wild cards (’\*’). Oddly, you also need a wildcard on the front of the filter.

So, you can set up your filter as an expression somewhat like this:

‘_A/B’+toStr(Root Container.index)+’_’

If you need more that one item in the filter, then you need to separate each one with a comma.

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**Author:** ![ian](https://avatars.discourse-cdn.com/v4/letter/i/bb73d2/32.png) [@ian](https://forum.inductiveautomation.com/u/ian)\
**Post date:** [January 27, 2016, 3:22am UTC](https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115/3 "2016-01-27T03:22:52Z")

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Thanks, @JordanCClark! It works! 😃

Except that I need to change the expression a little:

```auto
'*A/B'+toStr({Root Container.index})+'*'
```

(Curly bracket is added) ![:thumb_left:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e26afb081ddde6df016df6ee49159cf56aaca688.gif ":thumb\_left:")

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<div class="post-metadata">

**Author:** ![ian](https://avatars.discourse-cdn.com/v4/letter/i/bb73d2/32.png) [@ian](https://forum.inductiveautomation.com/u/ian)\
**Post date:** [January 27, 2016, 8:17am UTC](https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115/4 "2016-01-27T08:17:28Z")

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@JordanCClark,

The implemented Display Path filter works perfectly for the Alarm Status Component

When I try to implement the same Display Path Filter with Expression Binding on the Alarm Journal Component, things do not run smoothly - No data is shown at all.

[quote]The Expression Binding looks like:  
‘_A/B’+toStr({Root Container.index})+’_’  
[/quote]

But when I implement that Expression Binding to the Search String of the Alarm Journal Component, it works exactly as it is expected to be(!)

Note: The Alarm Journal Component also located in a Window which has a {Root Container.index} Custom property.

Not that I am not happy enough because there isn’t work around (such as from Display Path Filter to Search String) to get the expected result, but I wonder why is this so? 😐 This will help me to avoid same mistakes in the future. (Less debugging is better)

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**Author:** ![qliu](https://avatars.discourse-cdn.com/v4/letter/q/bc8723/32.png) [@qliu](https://forum.inductiveautomation.com/u/qliu)\
**Post date:** [January 15, 2021, 7:27pm UTC](https://forum.inductiveautomation.com/t/dynamically-filtering-alarm-status/11115/5 "2021-01-15T19:27:17Z")

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Hey @ian is there any update for your question?