# UDT Relative Tag Path Parameter

**URL:** <https://forum.inductiveautomation.com/t/udt-relative-tag-path-parameter/39474>\
**Category:** Ignition Early Access\
**Created:** [October 7, 2020, 9:30pm UTC](https://forum.inductiveautomation.com/t/udt-relative-tag-path-parameter/39474 "2020-10-07T21:30:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jpark](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@jpark](https://forum.inductiveautomation.com/u/jpark)\
**Post date:** [October 7, 2020, 9:30pm UTC](https://forum.inductiveautomation.com/t/udt-relative-tag-path-parameter/39474/1 "2020-10-07T21:30:06Z")

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I have several clients who pass in relative tag paths into UDTs as string parameters ( {[.]…/…/OPC/ATag1} ). Inside the UDT, there will be an expression tag with {ARelativeTagPath} as the expression. This has been working fine in 7.9, but no longer works in 8.0  
Is this no longer supported?

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/d/4dd1731865be80b17b18b1c4b86d66f5ea4188f9.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/d/0db876015a7524c9aa86e98fb8a6f65e95f685d1.png)  
@paul-griffith

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**Author:** ![mgross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mgross/32/3311_2.png) [@mgross](https://forum.inductiveautomation.com/u/mgross)\
**Post date:** [October 13, 2020, 10:23pm UTC](https://forum.inductiveautomation.com/t/udt-relative-tag-path-parameter/39474/2 "2020-10-13T22:23:29Z")

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Late response, but better late than never I suppose. In your case, you actually have to modify the UDT parameter and expression tag like so:

1. Modify the expression in the expression tag like so:  
`tag({ARelativeTagPath})`
2. Remove the brackets from the UDT parameter so it looks like this:  
`[.]…/…/OPC/ATag1`

After following these steps, I was able to resolve a similar UDT expression tag path in my local system.