# How can I modify opc tag (component value names)

**URL:** <https://forum.inductiveautomation.com/t/how-can-i-modify-opc-tag-component-value-names/52868>\
**Category:** Ignition\
**Created:** [November 9, 2021, 1:40pm UTC](https://forum.inductiveautomation.com/t/how-can-i-modify-opc-tag-component-value-names/52868 "2021-11-09T13:40:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![IA\_old\_forum](https://avatars.discourse-cdn.com/v4/letter/i/7ab992/32.png) [@IA\_old\_forum](https://forum.inductiveautomation.com/u/IA_old_forum)\
**Post date:** [November 9, 2021, 1:40pm UTC](https://forum.inductiveautomation.com/t/how-can-i-modify-opc-tag-component-value-names/52868/1 "2021-11-09T13:40:39Z")

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Hello. I was wondering how can I modify (or if it is even possible) the individual names of every component/index number cell of an array. I have an OPC tag with data type: Bool array.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/b/5b146e2f15d59ae66d154c925b6888ebac1443dc.png)

If I drill down to the value "property" for all 48 components/cells and right click, it shows me the possibility to change the name of each individual one. But when I try to do so, I write the new individual name and when I press enter it doesn't save. I don't want to use individual tags for each item as the OPC-UA gives all the info in this array (which I consider efficiently into this one array). Can anyone guide me a little? Should I make an UDT? Or do I have to modify my OPC into a different arrangement?

Thanks in advance 🙂

P.S: I realized in the picture above I used 2 different arrays, but it is the same principle

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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:** [November 9, 2021, 1:44pm UTC](https://forum.inductiveautomation.com/t/how-can-i-modify-opc-tag-component-value-names/52868/2 "2021-11-09T13:44:25Z")

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You can’t modify the names of these virtual “properties” for each array element.

If the OPC server you’re connected to exposes each element of the array as a Node in the address space then you could make a UDT and a member tag for each element that you could control the name of. Or just a regular tag per element that you control the name of. No need for a UDT unless you have a lot of arrays that are exactly the same and you want to treat them as a UDT for some reason.

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**Author:** ![IA\_old\_forum](https://avatars.discourse-cdn.com/v4/letter/i/7ab992/32.png) [@IA\_old\_forum](https://forum.inductiveautomation.com/u/IA_old_forum)\
**Post date:** [November 9, 2021, 3:10pm UTC](https://forum.inductiveautomation.com/t/how-can-i-modify-opc-tag-component-value-names/52868/3 "2021-11-09T15:10:38Z")

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Thanks for the very useful info! I figured since the start that I would most likely not be able to. As the Tag/array name is static as a whole and its n-index elements are the ones that do vary.

I would have 6 instances that share about 80% of the parameters, that is why I thought an UDT might have been useful, but then I would have to modify each individual one to its respective configuration (though I don't remember now if that could be done).

Is there no other alternative? some sort of scripting /event that turns an array into some sort of a list?  
or could a dataset tag be independent of the table component? I guess my intention is to have a Tag as a class

Thank you very much regardless