# \[IGN-8918\] UDT V8.1.35 Parameters warning special char **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [December 20, 2023, 9:33am UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355 "2023-12-20T09:33:21Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![m.pelagatti](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/m.pelagatti/32/68595_2.png) [@m.pelagatti](https://forum.inductiveautomation.com/u/m.pelagatti)\ **Post date:** [December 20, 2023, 9:33am UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/1 "2023-12-20T09:33:21Z")
Good morning everyone, I installed the new version 8.1.35 from 8.1.31 and I noticed that the UDT parameters now have a warning on the "\_" underscore character. This character is normally used and is not considered a special character in variables (scripts, template parameters, etc.) I saw that the project runs regularly, but I don't know where it could and if it could cause binding problems (so the warning message says). Is it a bug or is it intentional? I don't want to have to change all the UDTs of all existing projects.. 😮 Thank you ![2023-12-20 09_42_48-Window](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/4/c4a1b3308e6ceb23e28394db06e950428c02a192.png) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [December 20, 2023, 11:57am UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/2 "2023-12-20T11:57:13Z")
Yeah, looks like an over-zealous new warning. ---
**Author:** ![Dutch\_Buckholz](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dutch_buckholz/32/55926_2.png) [@Dutch\_Buckholz](https://forum.inductiveautomation.com/u/Dutch_Buckholz)\ **Post date:** [December 20, 2023, 9:58pm UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/3 "2023-12-20T21:58:09Z")
We agree - We're going to update this warning to not appear for commonly used/known good characters like underscore. In the meantime, know that your existing tag bindings that work will continue to work as is. ---
**Author:** ![m.pelagatti](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/m.pelagatti/32/68595_2.png) [@m.pelagatti](https://forum.inductiveautomation.com/u/m.pelagatti)\ **Post date:** [December 21, 2023, 6:16am UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/4 "2023-12-21T06:16:03Z")
Great, thanks 👍 ---
**Author:** ![Fatemeh\_Kordbacheh](https://avatars.discourse-cdn.com/v4/letter/f/47e85d/32.png) [@Fatemeh\_Kordbacheh](https://forum.inductiveautomation.com/u/Fatemeh_Kordbacheh)\ **Post date:** [March 28, 2024, 1:01am UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/5 "2024-03-28T01:01:56Z")
we have the same warning but it does NOT work fine! the parameter is used for a simple binding in a popup and I noticed if I change the value of parameter, it doesn't update in the popup. parameter name: Alarm\_Area ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/c/dc24057b2859f3bdda0407c6e85b4b581a142bd6.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/2/b2916fe5f782d18894e22e87595cb174a7342542.png) I am not sure how it is fixed, but after a few days it is updated! maybe we restarted the gateway or the server... ---
**Author:** ![Dutch\_Buckholz](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dutch_buckholz/32/55926_2.png) [@Dutch\_Buckholz](https://forum.inductiveautomation.com/u/Dutch_Buckholz)\ **Post date:** [March 28, 2024, 3:34pm UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/6 "2024-03-28T15:34:29Z")
Hi Fatemeh - without knowing the rest of the configuration for the popup, the tag, the device, when what was saved in the designer, the state of the device, and a lot of other possible information I couldn't tell you why it wasn't populating. All I can tell you is the root cause wasn't your name parameter. ---
**Author:** ![ziad](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ziad/32/6841_2.png) [@ziad](https://forum.inductiveautomation.com/u/ziad)\ **Post date:** [July 9, 2024, 2:34am UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/7 "2024-07-09T02:34:06Z")
When will this be updated? It's still in 8.1.39. It's given us quite the fright.... ---
**Author:** ![Dutch\_Buckholz](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dutch_buckholz/32/55926_2.png) [@Dutch\_Buckholz](https://forum.inductiveautomation.com/u/Dutch_Buckholz)\ **Post date:** [July 9, 2024, 8:17pm UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/8 "2024-07-09T20:17:24Z")
I can't give you a narrow timeline but it's in our backlog. We haven't lost sight of getting this done. ---
**Author:** ![ziad](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ziad/32/6841_2.png) [@ziad](https://forum.inductiveautomation.com/u/ziad)\ **Post date:** [July 10, 2024, 10:31pm UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/9 "2024-07-10T22:31:32Z")
Ok. Thank you 👍 ---
**Author:** ![Dutch\_Buckholz](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dutch_buckholz/32/55926_2.png) [@Dutch\_Buckholz](https://forum.inductiveautomation.com/u/Dutch_Buckholz)\ **Post date:** [April 20, 2026, 3:57pm UTC](https://forum.inductiveautomation.com/t/ign-8918-udt-v8-1-35-parameters-warning-special-char/83355/10 "2026-04-20T15:57:33Z")
This is fixed in 8.1.43