# load time dynamic 3D tileset in czml

**URL:** <https://community.cesium.com/t/load-time-dynamic-3d-tileset-in-czml/6650>\
**Category:** CesiumJS\
**Created:** [March 10, 2018, 5:50am UTC](https://community.cesium.com/t/load-time-dynamic-3d-tileset-in-czml/6650 "2018-03-10T05:50:36Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Faizal\_Avr](https://avatars.discourse-cdn.com/v4/letter/f/cdc98d/32.png) [@Faizal\_Avr](https://community.cesium.com/u/Faizal_Avr)\
**Post date:** [March 10, 2018, 5:50am UTC](https://community.cesium.com/t/load-time-dynamic-3d-tileset-in-czml/6650/1 "2018-03-10T05:50:36Z")

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Hi, im trying to create the 3d tileset with time series.  
i have read some examples in Cesium that it can load time series with czml script. So, i have an idea to create the changing 3D tiles model over time with czml script. But, i found that the czml just can load gltf file with this kind of code

"model": {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"gltf" : "../../../../Apps/SampleData/models/CesiumAir/Cesium\_Air.glb",  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"scale" : 2.0,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"minimumPixelSize": 128  
&nbsp;&nbsp;&nbsp;&nbsp;}

So, is that possible Cesium can load the 3D tileset with time series ?

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**Author:** ![sean\_lilley](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/sean_lilley/32/2083_2.png) [@sean\_lilley](https://community.cesium.com/u/sean_lilley)\
**Post date:** [March 12, 2018, 10:55pm UTC](https://community.cesium.com/t/load-time-dynamic-3d-tileset-in-czml/6650/2 "2018-03-12T22:55:01Z")

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That’s an interesting idea, but right now czml doesn’t support 3D Tiles.

You may be able to use [Cesium3DTile#expireDate](https://cesiumjs.org/Cesium/Build/Documentation/Cesium3DTile.html?classFilter=cesium3dt#expireDate) to get this sort of functionality. When this is set on a tile containing an [external tileset](https://github.com/AnalyticalGraphicsInc/3d-tiles#external-tilesets) it will reload the entire external tileset.

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**Author:** ![Faizal\_Avr](https://avatars.discourse-cdn.com/v4/letter/f/cdc98d/32.png) [@Faizal\_Avr](https://community.cesium.com/u/Faizal_Avr)\
**Post date:** [March 13, 2018, 5:50am UTC](https://community.cesium.com/t/load-time-dynamic-3d-tileset-in-czml/6650/3 "2018-03-13T05:50:38Z")

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thanks for your reply, Sean.  
yeah… the development of Cesium is really great.

so, i hope in the future it could load a tileset from czml script.

thanks for your suggestion also, i will try it.