# How to use new udt prop InstanceName and TagName

**URL:** <https://forum.inductiveautomation.com/t/how-to-use-new-udt-prop-instancename-and-tagname/8955>\
**Category:** Ignition\
**Created:** [August 26, 2014, 11:42am UTC](https://forum.inductiveautomation.com/t/how-to-use-new-udt-prop-instancename-and-tagname/8955 "2014-08-26T11:42:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [August 26, 2014, 11:42am UTC](https://forum.inductiveautomation.com/t/how-to-use-new-udt-prop-instancename-and-tagname/8955/1 "2014-08-26T11:42:56Z")

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How to use new udt prop InstanceName and TagName :

For example :  
system.tag.read(‘TTI/SIG/EQT\_TYPE1/EQT\_001.InstanceName’)  
system.tag.read(‘TTI/SIG/EQT\_TYPE1/EQT\_001.TagName’)

with udt instance EQT\_001 doesn’t work ?

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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:** [August 26, 2014, 11:39pm UTC](https://forum.inductiveautomation.com/t/how-to-use-new-udt-prop-instancename-and-tagname/8955/2 "2014-08-26T23:39:14Z")

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Hi,

No, these are not “properties”, these are essentially virtual UDT Parameters. You can use them anywhere you would use regular parameters, in the definition of data types or overridden values, such as:

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/dfd70d4cce799ee3042e604db7c782445e90590b.PNG)  

Regards,