# How to remove marker on google maps once another marker is placed **URL:** \ **Category:** Maps\ **Created:** [August 15, 2022, 7:05am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758 "2022-08-15T07:05:44Z")\ **Posts on this page:** 20\ **Page:** 3
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 4, 2022, 6:49am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/41 "2022-10-04T06:49:48Z")
The lat and long values for the first “call” block should be the same as they are in the second. So remove the zeroes and replace them with the `in list` blocks that you have for the second. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 4, 2022, 6:51am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/42 "2022-10-04T06:51:57Z")
Ok cool, thanks, I will try that. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 4, 2022, 6:58am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/43 "2022-10-04T06:58:23Z")
Ok, does this look all good? ![Screen Shot 2022-10-04 at 4.57.46 pm](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/f/f/ff9375a98d21cbe1ecca48cfdce9ce268a1943d9.png) ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 4, 2022, 7:05am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/44 "2022-10-04T07:05:26Z")
Yes! ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 4, 2022, 7:18am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/45 "2022-10-04T07:18:01Z")
Cool thanks for your help, I will go test it out. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 5, 2022, 6:47am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/46 "2022-10-05T06:47:19Z")
I have tested it, and there are a few things that don’t seem to fully work properly. The Green marker did not ever appear. The markers appeared at random time intervals even though I kept the timer at 60 seconds. The app stopped adding markers after about 15 minutes. The Map every few minutes did a random buzzing motion and kept changing the positions and zoom on google maps without me touching it and would not stop, this one I don’t expect you to be able to fix, but the others seem fixable. Many Thanks Levi ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 5, 2022, 7:04am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/47 "2022-10-05T07:04:20Z")
I understand there is a lot to unpack I thought it’s just better to explain everything at once as it could be a simple mistake I have made or something like that. 🙂 I really appreciate your help, I could not have gotten to where my app is now without your help. 🙂 ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 5, 2022, 3:26pm UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/48 "2022-10-05T15:26:12Z")
Can you try this demo and see if it’s any different? [https://x.thunkable.com/copy/8873fc776516193250c15e79dce17019](https://x.thunkable.com/copy/8873fc776516193250c15e79dce17019) The demo is the first screen in the project. I had to zoom in really far to see the markers but I do see one green and a bunch of red. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 5, 2022, 9:03pm UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/49 "2022-10-05T21:03:06Z")
Ok, I will try that today, Many Thanks Levi ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 5, 2022, 9:31pm UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/50 "2022-10-05T21:31:10Z")
You’re welcome. I had some issues with my own demo. In several cases, it colored one older pins green as well as the current/latest position pin. I don’t know if it would help to add a wait block within the “count 1 to …” block but it might. I’d try a small wait like 0.03 seconds first and then increase from there to see if it makes a difference. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 6, 2022, 7:05am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/51 "2022-10-06T07:05:51Z")
Do I have to connect it to my own data source to get it to work, because after I click the button it doesn’t place a marker? ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 6, 2022, 7:19am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/52 "2022-10-06T07:19:37Z")
Also, should I be using Google Sheets or thinkable built-in data storage? ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 6, 2022, 7:27am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/53 "2022-10-06T07:27:05Z")
I used a local data source. So I think you can use the one I added to the demo or you could certainly create your own data source. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 6, 2022, 7:28am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/54 "2022-10-06T07:28:10Z")
Ok, I will test that out. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 7, 2022, 8:34am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/55 "2022-10-07T08:34:14Z")
When I make a local dada source though thinkable after I make it and select it and add it to my project, it does not come up when I am using the blocks to change where I send the data and collect the data, am I doing something wrong or is it a problem with thunkable. Many Thanks, Levi. ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 7, 2022, 3:06pm UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/56 "2022-10-07T15:06:52Z")
This is a bug in Thunkable. When you create or change a data source, you have to drag a _new_ block from the drawer onto the Blocks tab. The _existing_ blocks will not have the correct slots for that new/changed data source. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 7, 2022, 11:14pm UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/57 "2022-10-07T23:14:51Z")
Ok, thanks I will try that. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 7, 2022, 11:18pm UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/58 "2022-10-07T23:18:24Z")
Even when I drag new blocks in for the “list of values in” block it still does not come up with my new local data source, what should I do? Thanks Levi ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [October 8, 2022, 12:13am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/59 "2022-10-08T00:13:47Z")
It could be this bug that I reported: > > > \### Platform > Does this affect: > Drag and Drop UI - web > > \### Steps to Reproduc…e > 1. In a DnD project, add a new local data source > 2. Drag a Create Row block onto a screen > 3. Click to select the data source name > > \### Expected Behavior > I would expect to see the name of the data source I just created in the drop-down menu of the Create Row block. > > \### Actual Behavior > The newest data source is missing. > > \### Project Link > https://x.thunkable.com/projects/6281d4af68e4420011b1ff8c/7880ee56-5923-4ce3-bfe8-6ca384429331/data > (this is a private project) > > The data source is called "Search results". > > \###Community Link > If there's an ongoing discussion about this behavior in the Community, please link to it here > > \`\`\` > STACK TRACE AND/OR SCREENSHOTS > \`\`\` You could try going to the My Data Sources tab at [Thunkable](https://x.thunkable.com/projects) and clicking the Sync with Source button for that new Data Source. And then adding a _new_ data source block from the drawer. But if that doesn’t fix it, I would: 1. Add a comment to the GitHub issue I linked to above. The more users who report the problem, the more likely it’s going to get addressed soon. 2. Contact Thunkable Support for help. ---
**Author:** ![leviocsmithk](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/leviocsmithk/32/136645_2.png) [@leviocsmithk](https://community.thunkable.com/u/leviocsmithk)\ **Post date:** [October 8, 2022, 9:54am UTC](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758/60 "2022-10-08T09:54:57Z")
I think it is the bug you reported, In the meantime what should I do? is there any other way? Many Thanks, Levi [Previous page](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758.md?page=2) [Next page](https://community.thunkable.com/t/how-to-remove-marker-on-google-maps-once-another-marker-is-placed/1999758.md?page=4)