# Try() expression - Has this been fixed yet from 7.9.1?

**URL:** <https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699>\
**Category:** Ignition\
**Created:** [July 6, 2017, 6:30am UTC](https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699 "2017-07-06T06:30:59Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [July 6, 2017, 6:30am UTC](https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699/1 "2017-07-06T06:30:59Z")

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This expression function doesn’t work in 7.9.1 as confirmed by support. Has this been fixed in later releases?

Cheers,  
Nick

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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:** [July 6, 2017, 12:46pm UTC](https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699/2 "2017-07-06T12:46:57Z")

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It’s been fixed on the branch that will become Ignition 7.9.5.

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [July 6, 2017, 9:36pm UTC](https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699/3 "2017-07-06T21:36:29Z")

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Thanks Kevin. Do you know when this will be out? I’ve been looking for this fix for a while now.  
Alternatively, how would I check for tags or tag folders that don’t exist?  
I’d like to use the same popups for multiple similar udts, and hide features that don’t exist.  
Cheers

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [July 7, 2017, 12:41am UTC](https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699/4 "2017-07-07T00:41:54Z")

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Nevermind, I found another forum post that suggested using tag.Quality != 404 which seems to work 🙂

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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:** [July 7, 2017, 1:18am UTC](https://forum.inductiveautomation.com/t/try-expression-has-this-been-fixed-yet-from-7-9-1/14699/5 "2017-07-07T01:18:51Z")

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Glad there’s a workaround, 7.9.5 may be a little while away. Still haven’t release 7.9.4.