# Event Navigation Array Parameters

**URL:** <https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [November 16, 2021, 8:55pm UTC](https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151 "2021-11-16T20:55:04Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dmerrell](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@dmerrell](https://forum.inductiveautomation.com/u/dmerrell)\
**Post date:** [November 16, 2021, 8:55pm UTC](https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151/1 "2021-11-16T20:55:04Z")

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I have this parameter on a view I want to open in a pop-up ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/b/eb13fb5f69de052f8642d1c9a48225a704eeaeed.png)

I can’t figure out the syntax in the event configuration section. I figured it would be something like this:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/e/9e3b478aedebfa90e5979c4a31528823696f8764.png)

But that gives me a null value. Is this possible?

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**Author:** ![ryan.white](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryan.white/32/73193_2.png) [@ryan.white](https://forum.inductiveautomation.com/u/ryan.white)\
**Post date:** [November 16, 2021, 9:26pm UTC](https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151/2 "2021-11-16T21:26:40Z")

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try having `tag.lastReadTime` as the name and just passing `hello` as the value. I know that you can read from objects in a similar fashion so maybe it will work this way as well

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**Author:** ![dmerrell](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@dmerrell](https://forum.inductiveautomation.com/u/dmerrell)\
**Post date:** [November 16, 2021, 9:29pm UTC](https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151/3 "2021-11-16T21:29:46Z")

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Thanks for the suggestion. Unfortunately, it didn’t work. When I try that, I do not get a null value. Instead, I get the default value for that parameter. In this case “test”.

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**Author:** ![ryan.white](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryan.white/32/73193_2.png) [@ryan.white](https://forum.inductiveautomation.com/u/ryan.white)\
**Post date:** [November 16, 2021, 10:04pm UTC](https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151/4 "2021-11-16T22:04:44Z")

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Okay, so ignition is interpreting what you are passing it as a path to a property instead of treating it as a standalone object. If you notice if you select a path to a parameter, it shows as `{path.to.item.parameter}` in the value box

You can get around this by either by creating a custom property on the root container of whatever is calling the popup and then referencing that custom property in the event or you can utilize `system.perspective.openPopup` in scripting, which will allow you to pass pretty much anything to the popup parameter.

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**Author:** ![dmerrell](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@dmerrell](https://forum.inductiveautomation.com/u/dmerrell)\
**Post date:** [November 16, 2021, 10:29pm UTC](https://forum.inductiveautomation.com/t/event-navigation-array-parameters/53151/5 "2021-11-16T22:29:04Z")

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Thanks Ryan. The first suggestion still gave me the default value. I ended up using system.perpsective.openPopup as you suggested.