# Application studio row update Expression **URL:** \ **Category:** Kinetic ERP\ **Tags:** customization, e10, kinetic-form, epicor, application-studio\ **Created:** [October 5, 2022, 3:16pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073 "2022-10-05T15:16:43Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Vishal.Sharma185](https://www.epiusers.help/letter_avatar_proxy/v4/letter/v/7ea924/32.png) [@Vishal.Sharma185](https://www.epiusers.help/u/Vishal.Sharma185)\ **Post date:** [October 5, 2022, 3:16pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/1 "2022-10-05T15:16:43Z")
Hello People. Do you know what is wrong with this expression? I am trying to add a row update event. ![image](https://www.epiusers.help/uploads/default/original/3X/e/6/e6efa18e61ccbb5a630c9c40c5b5a4043a164825.png) ---
**Author:** ![hmwillett](https://www.epiusers.help/user_avatar/www.epiusers.help/hmwillett/32/93207_2.png) [@hmwillett](https://www.epiusers.help/u/hmwillett)\ **Post date:** [October 5, 2022, 3:28pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/2 "2022-10-05T15:28:16Z")
What widget are you working with and where are you trying to enter that? If you’re doing the row-update widget, you need to put that in the expression field, not the value. The value field is expecting JSON syntax as that error describes. ---
**Author:** ![hmwillett](https://www.epiusers.help/user_avatar/www.epiusers.help/hmwillett/32/93207_2.png) [@hmwillett](https://www.epiusers.help/u/hmwillett)\ **Post date:** [October 5, 2022, 3:29pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/3 "2022-10-05T15:29:37Z")
You’re also trying to divide a string instead of a numerical field. Take the quotes off when you put that in the expression field. ---
**Author:** ![Vishal.Sharma185](https://www.epiusers.help/letter_avatar_proxy/v4/letter/v/7ea924/32.png) [@Vishal.Sharma185](https://www.epiusers.help/u/Vishal.Sharma185)\ **Post date:** [October 5, 2022, 3:32pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/4 "2022-10-05T15:32:20Z")
Hey Thanks Willet for the prompt reply. I am trying this very first time. 🙂 I am going to follow the same. Also, can you please let me know how I call something like tool\_event which we are doing in classic customizations? ---
**Author:** ![hmwillett](https://www.epiusers.help/user_avatar/www.epiusers.help/hmwillett/32/93207_2.png) [@hmwillett](https://www.epiusers.help/u/hmwillett)\ **Post date:** [October 5, 2022, 3:34pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/5 "2022-10-05T15:34:59Z")
> [@Vishal.Sharma185](#): > > tool\_event which we are doing in classic customizations? Depends on what you mean by “call”. You can make your own event that can use the trigger of event before/after to do stuff. If you truly want to call it to use the event, then in your custom event, use the event-next widget and enter the name of the event you wish to call. ![image](https://www.epiusers.help/uploads/default/original/3X/1/a/1a4b795767e80322d3b6748efff310484f357406.png) ---
**Author:** ![Vishal.Sharma185](https://www.epiusers.help/letter_avatar_proxy/v4/letter/v/7ea924/32.png) [@Vishal.Sharma185](https://www.epiusers.help/u/Vishal.Sharma185)\ **Post date:** [October 5, 2022, 3:42pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/6 "2022-10-05T15:42:41Z")
okay thanks. I will try that. Last question for today and also enough for me to learn further. c# code has code in after\_RowChange(I think here I need to user after row change event) but in the event it is taking value from current dataset and calling a sales order adapter. Like this:How I can implement this in Application studio? ![image](https://www.epiusers.help/uploads/default/original/3X/b/c/bcd1ecd20b2259f061d19e3650179919f2dc99ad.png) ![image](https://www.epiusers.help/uploads/default/original/3X/a/6/a64474286e5b1dae759a30478b8b9bdd87a5f1e9.png) ---
**Author:** ![hmwillett](https://www.epiusers.help/user_avatar/www.epiusers.help/hmwillett/32/93207_2.png) [@hmwillett](https://www.epiusers.help/u/hmwillett)\ **Post date:** [October 5, 2022, 3:44pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/7 "2022-10-05T15:44:35Z")
You should review the various triggers available to you. ![image](https://www.epiusers.help/uploads/default/original/3X/a/3/a3e6a7d4410868231e8897d92de79177e1291741.png) ---
**Author:** ![Vishal.Sharma185](https://www.epiusers.help/letter_avatar_proxy/v4/letter/v/7ea924/32.png) [@Vishal.Sharma185](https://www.epiusers.help/u/Vishal.Sharma185)\ **Post date:** [October 5, 2022, 3:45pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/8 "2022-10-05T15:45:40Z")
and calling adapter with method? via Rest calling ---
**Author:** ![hmwillett](https://www.epiusers.help/user_avatar/www.epiusers.help/hmwillett/32/93207_2.png) [@hmwillett](https://www.epiusers.help/u/hmwillett)\ **Post date:** [October 5, 2022, 3:45pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/9 "2022-10-05T15:45:56Z")
> [@Vishal.Sharma185](#): > > via Rest calling Spot on. ---
**Author:** ![Vishal.Sharma185](https://www.epiusers.help/letter_avatar_proxy/v4/letter/v/7ea924/32.png) [@Vishal.Sharma185](https://www.epiusers.help/u/Vishal.Sharma185)\ **Post date:** [October 5, 2022, 3:47pm UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/10 "2022-10-05T15:47:36Z")
thanks Willett. It made my day. I got enough information to learn and grow. Will come back with more queries. 🙂 ---
**Author:** ![Vishal.Sharma185](https://www.epiusers.help/letter_avatar_proxy/v4/letter/v/7ea924/32.png) [@Vishal.Sharma185](https://www.epiusers.help/u/Vishal.Sharma185)\ **Post date:** [October 6, 2022, 5:57am UTC](https://www.epiusers.help/t/application-studio-row-update-expression/95073/11 "2022-10-06T05:57:47Z")
Got one question: How I can disable a few columns in my custom events? The reason why I need here because I have condition getting values from Rest calling.