# Reference tag to also get Data Historian data **URL:** \ **Category:** Ignition\ **Tags:** ignition81, perspective\ **Created:** [June 2, 2023, 7:49am UTC](https://forum.inductiveautomation.com/t/reference-tag-to-also-get-data-historian-data/74473 "2023-06-02T07:49:13Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![siim\_suitslepp](https://avatars.discourse-cdn.com/v4/letter/s/e9bcb4/32.png) [@siim\_suitslepp](https://forum.inductiveautomation.com/u/siim_suitslepp)\ **Post date:** [June 2, 2023, 7:49am UTC](https://forum.inductiveautomation.com/t/reference-tag-to-also-get-data-historian-data/74473/1 "2023-06-02T07:49:13Z")
Hey! Today I was thinking if a refence tag could not only get current tag value, but also the history of tag via tag historian. After testing I feel like the awnser is no. However I was wondering if there are work arounds I am just trying to implement a hierarchical model (Client/Park/Cluster/Inverter) to old PV parks (5 years of data) for an dashboard without doing any modifications to the database itself. Previous SCADA developer built up a park having all OPC tags in a single level (directory) which is bad (). I thought maybe i could build a system which i basically references to the single directory solution and also could get the data history behind it to easily get dashboards and applications working. I am open to discussions and talk around this topic. Every oppinion helps! Thanks! ---
**Author:** ![Hayden\_Watson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/hayden_watson/32/48792_2.png) [@Hayden\_Watson](https://forum.inductiveautomation.com/u/Hayden_Watson)\ **Post date:** [June 2, 2023, 11:10am UTC](https://forum.inductiveautomation.com/t/reference-tag-to-also-get-data-historian-data/74473/2 "2023-06-02T11:10:34Z")
Why not remap your tags and then use a SQL update query to change the tag historical data to the new tag reference in the DB? Just try and do it with a backup first