# Slicer does not recognize masks on FLAR21 dataset 

**URL:** <https://discourse.slicer.org/t/slicer-does-not-recognize-masks-on-flar21-dataset/22299>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [March 3, 2022, 9:55pm UTC](https://discourse.slicer.org/t/slicer-does-not-recognize-masks-on-flar21-dataset/22299 "2022-03-03T21:55:14Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![faraz](https://avatars.discourse-cdn.com/v4/letter/f/278dde/32.png) [@faraz](https://discourse.slicer.org/u/faraz)\
**Post date:** [March 3, 2022, 9:55pm UTC](https://discourse.slicer.org/t/slicer-does-not-recognize-masks-on-flar21-dataset/22299/1 "2022-03-03T21:55:14Z")

</div>

Hello,

So when I load the masks from FLAR21 dataset, the slicer does not recognize them as masks, but when I use some other dataset, also with multi-label masks, it does recognize them.

Does it have to do with the data (meta-data?) or does it have to do with slicer?

Thanks.