# Strange behavior of the Map.onMarkerPress **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [October 21, 2018, 3:18pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020 "2018-10-21T15:18:22Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![actech](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@actech](https://community.thunkable.com/u/actech)\ **Post date:** [October 21, 2018, 3:18pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/1 "2018-10-21T15:18:23Z")
Does anyone work block “Map.onMarkerPress”? This block has an “event” variable, but I can’t get any data from it! Assigning this variable to a Label displays a [object Object], but nothing happens when using the “object to JSON” block. ---
**Author:** ![IWS](https://avatars.discourse-cdn.com/v4/letter/i/50afbb/32.png) [@IWS](https://community.thunkable.com/u/IWS)\ **Post date:** [May 1, 2019, 4:02pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/2 "2019-05-01T16:02:44Z")
> i was able to figure some of it out by searching onMarkerPress… [![](https://i.imgur.com/7QX8Zip.png) ](https://i.imgur.com/7QX8Zip.png) ---
**Author:** ![actech](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@actech](https://community.thunkable.com/u/actech)\ **Post date:** [May 2, 2019, 7:31am UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/3 "2019-05-02T07:31:08Z")
Great job, IWS! ---
**Author:** ![IWS](https://avatars.discourse-cdn.com/v4/letter/i/50afbb/32.png) [@IWS](https://community.thunkable.com/u/IWS)\ **Post date:** [May 2, 2019, 12:31pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/4 "2019-05-02T12:31:04Z")
the onCalloutPress event though, does nothing and is never fired … looks like it was a bug in react and has been fixed… can you guys upstream this PR into your codebase pretty please? > ---
**Author:** ![Michael\_Rogulla](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@Michael\_Rogulla](https://community.thunkable.com/u/Michael_Rogulla)\ **Post date:** [May 21, 2019, 10:21pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/5 "2019-05-21T22:21:04Z")
Hi @IWS thank you so much for your “onMarkerPress”-example, it works for me. Now I’ve tested it with **two** markers, but I alway get the same coordinates, no matter which marker I press. Is it possible that “event” returns an array, and if so, how can I get the current marker? ---
**Author:** ![Mark](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mark/32/18133_2.png) [@Mark](https://community.thunkable.com/u/Mark)\ **Post date:** [May 21, 2019, 10:38pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/6 "2019-05-21T22:38:15Z")
> [@IWS](#): > > looks like it was a bug in react and has been fixed… can you guys upstream this PR into your codebase pretty please? Despite what that GitHub issue says the bug was not fixed. I filed another GitHub issue with the react-native-maps repo earlier this month: > > > \### Is this a bug report? > > Yes > > > > \### Have you read the \[Installation Inst…ructions\](https://github.com/react-community/react-native-maps/blob/master/docs/installation.md)? > > Yes > > \### Environment > > Please specify the react, react-native, react-native-maps versions, eg: > > react-native: 0.57.1 > react: 16.5.0 > react-native-maps: 0.22.1 > > > Target Platform: eg: iOS - 12.1 Simulator/iPhone X > > \*\*\*If your target is iOS , please specify if you are using AppleMaps or GoogleMaps > > GoogleMaps > > \### Steps to Reproduce > > > > (Write your steps here:) > > 1. Create app with a Google map, a Marker and an onCalloutPress event handler > 2. Click on the Marker > 3. Click on the Callout > > \### Expected Behavior > > > > (Write what you thought would happen.) > > That the onCalloutPress event handler would be triggered > > \### Actual Behavior > > > > (Write what happened. Add screenshots!) > > The onCalloutPress event handler as not triggered > > \### Reproducible Demo > > > > (Paste the link to an example project and exact instructions to reproduce the issue.) > > https://snack.expo.io/@thunkmark/oncalloutpress-test > > Make sure you are previewing on iOS. > Click on the marker and then the callout and notice that nothing is logged to the console when you click the callout. ---
**Author:** ![Mark](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mark/32/18133_2.png) [@Mark](https://community.thunkable.com/u/Mark)\ **Post date:** [May 21, 2019, 10:44pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/7 "2019-05-21T22:44:16Z")
> [@Michael\_Rogulla](#): > > Now I’ve tested it with **two** markers, but I alway get the same coordinates, no matter which marker I press. Is it possible that “event” returns an array, and if so, how can I get the current marker? Michael, Is this on Android or iOS? -Mark ---
**Author:** ![Michael\_Rogulla](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@Michael\_Rogulla](https://community.thunkable.com/u/Michael_Rogulla)\ **Post date:** [May 21, 2019, 10:45pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/8 "2019-05-21T22:45:41Z")
@Mark I tested it on iOS. With ThunkableX. ---
**Author:** ![Mark](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mark/32/18133_2.png) [@Mark](https://community.thunkable.com/u/Mark)\ **Post date:** [May 21, 2019, 10:59pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/9 "2019-05-21T22:59:26Z")
Michael, Im not seeing the issue that you are describing can you share (privately if you like) the URL of your project or a copy/share link? -Mark ---
**Author:** ![Michael\_Rogulla](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@Michael\_Rogulla](https://community.thunkable.com/u/Michael_Rogulla)\ **Post date:** [May 22, 2019, 11:20am UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/10 "2019-05-22T11:20:22Z")
Hi @Mark, thanks for the fast reply. It took me some time to find out what happened. In the end, I now have two Projects in ThunkX that look nearly the same and now work correctly. Yesterday they behaved differently. The one project responded correctly (two different markers -\> onMarkerPress gives two different locations), the other did not. I found out, that one project (named “GoogleMaps Test”) had only the variables that I defined inside, in the other project (named “MapTestPress”) all variables from another project show up! I used a wrong variable, which sounded similar, but gave the wrong coordinates. My new question now is: how can that be? I started with “MapTestPress” from scratch by clicking on “Create New App”, but it shows all other variables from another project. Did I do something wrong? If not then this must be an other subject. Those are the URLs: “MapTestPress”: [https://x.thunkable.com/projects/5ce45e4f21b99bfc51c8d384/1545cf94-6dac-4e4d-a8f2-1a2d73499780/designer](https://x.thunkable.com/projects/5ce45e4f21b99bfc51c8d384/1545cf94-6dac-4e4d-a8f2-1a2d73499780/designer) “GoogleMaps Test”: [https://x.thunkable.com/projects/5ce4731af04b4f69ebe80186/ff7949d0-1579-4858-9a51-6610d44b2bdf/designer](https://x.thunkable.com/projects/5ce4731af04b4f69ebe80186/ff7949d0-1579-4858-9a51-6610d44b2bdf/designer) Do I have to switch the project to public? ---
**Author:** ![Mark](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mark/32/18133_2.png) [@Mark](https://community.thunkable.com/u/Mark)\ **Post date:** [May 22, 2019, 8:12pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/11 "2019-05-22T20:12:45Z")
@Michael_Rogulla Wow, that’s a weird bug! Thanks for discovering it. We’re looking into it. -Mark ---
**Author:** ![Mark](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mark/32/18133_2.png) [@Mark](https://community.thunkable.com/u/Mark)\ **Post date:** [June 24, 2019, 4:19pm UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/12 "2019-06-24T16:19:13Z")
Michael, We are testing a fix for this and it should be included in an upcoming release. Thanks again for discovering the bug! -Mark ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 11:55am UTC](https://community.thunkable.com/t/strange-behavior-of-the-map-onmarkerpress/53020/13 "2024-11-08T11:55:04Z")