# Newbie Delving Into Tags and UDT **URL:** \ **Category:** Ignition\ **Created:** [January 16, 2015, 9:53pm UTC](https://forum.inductiveautomation.com/t/newbie-delving-into-tags-and-udt/9557 "2015-01-16T21:53:24Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![ginjaninja](https://avatars.discourse-cdn.com/v4/letter/g/ed8c4c/32.png) [@ginjaninja](https://forum.inductiveautomation.com/u/ginjaninja)\ **Post date:** [January 16, 2015, 9:53pm UTC](https://forum.inductiveautomation.com/t/newbie-delving-into-tags-and-udt/9557/1 "2015-01-16T21:53:24Z")
Hi All, I’m building a project and I am curious on to how to go about the following: I have a tag database that has a tree structure as follows: Tags/Pumps/Pump01/CMDON Tags/Pumps/Pump01/CMDOFF Tags/Pumps/Pump01/Lockout Tags/Pumps/Pump01/Pressure Tags/Pumps/Pump02/CMDON Tags/Pumps/Pump02/CMDOFF Tags/Pumps/Pump02/Lockout Tags/Pumps/Pump02/Pressure Tags/Pumps/Pump03/CMDON Tags/Pumps/Pump03/CMDOFF Tags/Pumps/Pump03/Lockout Tags/Pumps/Pump03/Pressure … … . Now I want to create a UDT such that I can pass in a index/integer and the UDT would go to the tag database and populate itself based on the index I pass into it. Thanks for your help and much appreciated. ---
**Author:** ![KathyApplebaum](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kathyapplebaum/32/7261_2.png) [@KathyApplebaum](https://forum.inductiveautomation.com/u/KathyApplebaum)\ **Post date:** [January 16, 2015, 10:11pm UTC](https://forum.inductiveautomation.com/t/newbie-delving-into-tags-and-udt/9557/2 "2015-01-16T22:11:34Z")
I’d suggest checking out the Inductive University videos on UDTs ([inductiveuniversity.com/course/tags](https://inductiveuniversity.com/course/tags), then scroll down to the topic on “Creating User Defined Types”). They cover exactly how to do this, step by step. ---
**Author:** ![ginjaninja](https://avatars.discourse-cdn.com/v4/letter/g/ed8c4c/32.png) [@ginjaninja](https://forum.inductiveautomation.com/u/ginjaninja)\ **Post date:** [January 16, 2015, 11:40pm UTC](https://forum.inductiveautomation.com/t/newbie-delving-into-tags-and-udt/9557/3 "2015-01-16T23:40:19Z")
Hi, It seems that video is a good tutorial on how to reference to a device directly via OPC, via the OPC tag path, however, what I am hoping to do is reference a tag in the tag database, which is then configured to a point in the OPC server. For example the video informs me to reference a PLC address such using a parameter in the tag path as follows: [DEVICE]{parameter}.status But in my instance, I’m hoping to do something similar but instead of entering the path to the device I want to have my parameter change the tag path. For example: tag\Motor{parameter}.status Lol, I’m not sure if I’m explaining what I mean here… but I hope you follow 🙂 Thanks! ---
**Author:** ![diat150](https://avatars.discourse-cdn.com/v4/letter/d/a587f6/32.png) [@diat150](https://forum.inductiveautomation.com/u/diat150)\ **Post date:** [January 17, 2015, 12:47am UTC](https://forum.inductiveautomation.com/t/newbie-delving-into-tags-and-udt/9557/4 "2015-01-17T00:47:23Z")
I think you are talking about using indirects… [inductiveuniversity.com/video/i … ag-binding](https://inductiveuniversity.com/video/indirect-tag-binding) ---
**Author:** ![acooper](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/acooper/32/4221_2.png) [@acooper](https://forum.inductiveautomation.com/u/acooper)\ **Post date:** [October 8, 2015, 11:00pm UTC](https://forum.inductiveautomation.com/t/newbie-delving-into-tags-and-udt/9557/5 "2015-10-08T23:00:36Z")
Hi ginjaninja, Are you still looking for some assistance with this issue? If so let me know. You should still be able to create query tags inside of a UDT, so the idea is similar provided you know how to query your tag db.