# Setting new active scalar does not always show

**URL:** <https://discourse.slicer.org/t/setting-new-active-scalar-does-not-always-show/4678>\
**Category:** Development\
**Tags:** extensions-manager\
**Created:** [November 8, 2018, 10:48am UTC](https://discourse.slicer.org/t/setting-new-active-scalar-does-not-always-show/4678 "2018-11-08T10:48:56Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [November 8, 2018, 2:15pm UTC](https://discourse.slicer.org/t/setting-new-active-scalar-does-not-always-show/4678/3 "2018-11-08T14:15:11Z")

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You need to set up a few more things (enable scalar display, set range, color node, etc.) see example in [this post](https://discourse.slicer.org/t/is-there-any-way-to-draw-hundreds-of-balls-with-different-colors/572/7?u=lassoan). Let us know if you have still have issues.

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_[View the full topic](https://discourse.slicer.org/t/setting-new-active-scalar-does-not-always-show/4678)._