# Collision editor wont work

**URL:** <https://discourse.mapeditor.org/t/collision-editor-wont-work/1878>\
**Category:** Bugs\
**Created:** [December 12, 2016, 12:30am UTC](https://discourse.mapeditor.org/t/collision-editor-wont-work/1878 "2016-12-12T00:30:50Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![YHL\_50\_Project](https://avatars.discourse-cdn.com/v4/letter/y/2acd7d/32.png) [@YHL\_50\_Project](https://discourse.mapeditor.org/u/YHL_50_Project)\
**Post date:** [December 12, 2016, 12:30am UTC](https://discourse.mapeditor.org/t/collision-editor-wont-work/1878/1 "2016-12-12T00:30:50Z")

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I’m trying to use the collision editor but the zoom text is highlighting so nothing works 😕

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**Author:** ![bjorn](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.mapeditor.org/bjorn/32/1599_2.png) [@bjorn](https://discourse.mapeditor.org/u/bjorn)\
**Post date:** [December 12, 2016, 2:25pm UTC](https://discourse.mapeditor.org/t/collision-editor-wont-work/1878/2 "2016-12-12T14:25:54Z")

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I don’t know what you mean with “the zoom text is highlighting”. Can you be more specific or provide a screenshot?

In general, if the tile collision editor isn’t working, it’s usually because you’re using an external tileset. You can’t edit a tileset while it is external, so you’ll need to temporarily import it. This will be fixed in Tiled 1.0 (I’m mostly done fixing it on the `wip/tilesetdocument` branch, but it caused a huge amount of changes).

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**Author:** ![YHL\_50\_Project](https://avatars.discourse-cdn.com/v4/letter/y/2acd7d/32.png) [@YHL\_50\_Project](https://discourse.mapeditor.org/u/YHL_50_Project)\
**Post date:** [December 12, 2016, 9:31pm UTC](https://discourse.mapeditor.org/t/collision-editor-wont-work/1878/3 "2016-12-12T21:31:41Z")

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Oh thank you, I fixed it 😃 and by highlighted I mean like this

![](https://canada1.discourse-cdn.com/flex035/uploads/mapeditor/original/1X/6f379df79a533dc3e5065ef1c27a6348ab463f2a.png)

(I thought that was the reason)

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**Author:** ![bjorn](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.mapeditor.org/bjorn/32/1599_2.png) [@bjorn](https://discourse.mapeditor.org/u/bjorn)\
**Post date:** [December 12, 2016, 9:45pm UTC](https://discourse.mapeditor.org/t/collision-editor-wont-work/1878/4 "2016-12-12T21:45:48Z")

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Ok, great that this was your problem. 🙂

I’ve merged the `wip/tilesetdocument` branch into `master` and the changes are now available in the snapshot builds. So if you’d like to give those a try, then you can avoid the “temporarily import the tileset” workaround. Since this represents quite a big change to Tiled, feedback is welcome.