# Expressions for Visibility

**URL:** <https://forum.inductiveautomation.com/t/expressions-for-visibility/23345>\
**Category:** Ignition\
**Created:** [March 14, 2019, 4:07pm UTC](https://forum.inductiveautomation.com/t/expressions-for-visibility/23345 "2019-03-14T16:07:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![damean.thomas](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/damean.thomas/32/11367_2.png) [@damean.thomas](https://forum.inductiveautomation.com/u/damean.thomas)\
**Post date:** [March 14, 2019, 4:07pm UTC](https://forum.inductiveautomation.com/t/expressions-for-visibility/23345/1 "2019-03-14T16:07:08Z")

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I have made a screen for our 16 process vessels that use indirect tags. not all of the vessels have the same equipment so am hiding visibility through the expression “{Root Container.reactorNumber}!=14”. this works as expected but when i try to add other vessels to the expression it doesn’t work i.e. "{Root Container.reactorNumber}!=14, 9, 11. Does anyone have any insight as to what i am doing wrong?

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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:** [March 14, 2019, 4:10pm UTC](https://forum.inductiveautomation.com/t/expressions-for-visibility/23345/2 "2019-03-14T16:10:37Z")

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> [@damean.thomas](#):
>
> `{Root Container.reactorNumber}!=14, 9, 11`

This isn't a valid expression. You'd have to use something like this:  
`{Root Container.reactorNumber} != 14 && {Root Container.reactorNumber} != 9 && {Root Container.reactorNumber} != 11`

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<div class="post-metadata">

**Author:** ![damean.thomas](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/damean.thomas/32/11367_2.png) [@damean.thomas](https://forum.inductiveautomation.com/u/damean.thomas)\
**Post date:** [March 14, 2019, 4:30pm UTC](https://forum.inductiveautomation.com/t/expressions-for-visibility/23345/3 "2019-03-14T16:30:41Z")

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thank you i tried that using pipe and it didn’t work . All is well now.