# Question for Vision Dropdown List **URL:** \ **Category:** Ignition\ **Created:** [August 30, 2019, 5:10am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895 "2019-08-30T05:10:57Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Min.Liao](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@Min.Liao](https://forum.inductiveautomation.com/u/Min.Liao)\ **Post date:** [August 30, 2019, 5:10am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/1 "2019-08-30T05:10:57Z")
Hi, I used a dropdown list in a template. But once I selected one in a window, the selection would keep in any window I opened using this template. I searched on the forum, the suggestion was that we can set the selectedIndex of this component. But where I can write this code using python script. Each window I opened would keep my last selection, the screen was as below: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/8/8efa071eb28effe1dbbbf4a78964d23a07b8b0de.png) In my experience of web development, I never met such question, my question is that how to display the first row not my selection on other window when I open a window.Below is my expected affect. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/c/cc09ecf784fbc822fe6e8a9228fb4f9de5ce752e.png) ---
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [August 30, 2019, 8:56am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/2 "2019-08-30T08:56:56Z")
Edit: I’m assuming you’re talking about Vision since you mentioned you made it in a Template. Not sure what you plan to do with this component, but usually you would bidirectionally bind one of the selected properties (selectedIndex or selectedLabel) to a tag. If you don’t want to bind it but want it to reset, you can set the selectedIndex property by executing a script on the component’s property change event handler, specifically on change of its ‘componentRunning’ property. ```auto If event.propertyName == 'componentRunning': event.source.selectedIndex = 0 ``` ---
**Author:** ![Min.Liao](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@Min.Liao](https://forum.inductiveautomation.com/u/Min.Liao)\ **Post date:** [August 30, 2019, 9:17am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/3 "2019-08-30T09:17:13Z")
Thanks for your help. It works very well. ---
**Author:** ![Min.Liao](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@Min.Liao](https://forum.inductiveautomation.com/u/Min.Liao)\ **Post date:** [September 2, 2019, 9:16am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/4 "2019-09-02T09:16:45Z")
Hi , Nminchin I define a dataset which gets selection items from a database,but it often throws an exception of "0 out of bounds’.I guess that’s because the dataset is null before the script executes.Do you know why this happens and how I can solve this issue? ---
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [September 2, 2019, 10:16am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/5 "2019-09-02T10:16:01Z")
Hmm, what if you change the if condition to use `data` instead of `componentRunning`? ---
**Author:** ![Sanderd17](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/sanderd17/32/8735_2.png) [@Sanderd17](https://forum.inductiveautomation.com/u/Sanderd17)\ **Post date:** [September 2, 2019, 12:33pm UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/6 "2019-09-02T12:33:44Z")
or wrap it in `try: ... except: ...` to just ignore the error ---
**Author:** ![Min.Liao](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@Min.Liao](https://forum.inductiveautomation.com/u/Min.Liao)\ **Post date:** [September 3, 2019, 9:06am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/7 "2019-09-03T09:06:53Z")
Thank you all. Now, I adopted Sanderd17’s suggestion to solve the problem. ---
**Author:** ![andreia\_chiurato](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@andreia\_chiurato](https://forum.inductiveautomation.com/u/andreia_chiurato)\ **Post date:** [May 24, 2022, 6:22am UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/8 "2022-05-24T06:22:38Z")
Hi, I have a similar problem. I created a template with dropdown list ( **but I have other properties binding in Data and SelectedValue, that I need to show some options** ), and I note that when I close the gateway (for now is Trial version) or restart de computer, the values don’t remain with the last choice, return to \*\* \< SelectOne \> \*\* I tried create a custom property to write this value …exist one way to fixed the last choice? Thanks. Vision version 8.1 ---
**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:** [May 24, 2022, 12:20pm UTC](https://forum.inductiveautomation.com/t/question-for-vision-dropdown-list/27895/9 "2022-05-24T12:20:17Z")
Properties are not persistent outside the client session. To make something persistent, bind to a gateway memory tag. Note that this also makes it shared for all clients. If you need individual persistence, you will need to construct something custom with a database, keyed by user.