# Gmask tracer

**URL:** <https://forum.logik.tv/t/gmask-tracer/3458>\
**Category:** Flame Questions\
**Created:** [July 16, 2021, 4:54pm UTC](https://forum.logik.tv/t/gmask-tracer/3458 "2021-07-16T16:54:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![johnt](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/johnt/32/14040_2.png) [@johnt](https://forum.logik.tv/u/johnt)\
**Post date:** [July 16, 2021, 4:54pm UTC](https://forum.logik.tv/t/gmask-tracer/3458/1 "2021-07-16T16:54:52Z")

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Anyone know the answer - is it possible to track and gmask whic has a tracerkey using the 3d camera in gmask tracer? I’ve done it: the matte is tracked, F8 shows my key but the output is black.  
 ![tracer](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/2/24689e2d79c22960b6920ad59c32e270be6dcf52.gif)

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**Author:** ![johnt](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/johnt/32/14040_2.png) [@johnt](https://forum.logik.tv/u/johnt)\
**Post date:** [July 16, 2021, 4:58pm UTC](https://forum.logik.tv/t/gmask-tracer/3458/2 "2021-07-16T16:58:01Z")

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as a workaround, I’ve got two gmask tracers - one with a key, one without multiplied together. Nice to do it all in one node though.