# how to drill pick positions or change primitives's allowpicking status dynamically

**URL:** <https://community.cesium.com/t/how-to-drill-pick-positions-or-change-primitivess-allowpicking-status-dynamically/8747>\
**Category:** CesiumJS\
**Created:** [October 14, 2019, 2:29am UTC](https://community.cesium.com/t/how-to-drill-pick-positions-or-change-primitivess-allowpicking-status-dynamically/8747 "2019-10-14T02:29:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lvziao](https://avatars.discourse-cdn.com/v4/letter/l/a6a055/32.png) [@lvziao](https://community.cesium.com/u/lvziao)\
**Post date:** [October 14, 2019, 2:29am UTC](https://community.cesium.com/t/how-to-drill-pick-positions-or-change-primitivess-allowpicking-status-dynamically/8747/1 "2019-10-14T02:29:17Z")

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**I loaded a scene gltf model in Cesium, then i also created a gltf model moving together with mouse position,**

**the problem i have is when i trying to pick the scene model’s position, the gltf be created will verb the scene model that make me lossing the correct picked position information,**

**does any one know how to solve it?**

**The Cesium version i’m using is**

V1.59

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<div class="post-metadata">

**Author:** ![omar](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/omar/32/1999_2.png) [@omar](https://community.cesium.com/u/omar)\
**Post date:** [October 18, 2019, 1:22am UTC](https://community.cesium.com/t/how-to-drill-pick-positions-or-change-primitivess-allowpicking-status-dynamically/8747/2 "2019-10-18T01:22:30Z")

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I think I answered your same question here: [https://github.com/AnalyticalGraphicsInc/cesium/issues/8298](https://github.com/AnalyticalGraphicsInc/cesium/issues/8298)

The same problem and solutions applies whether it’s 2 glTF models or a 3D Tileset and a model.