How to import mask?

Import and Export
1

Dear community,
I want to import a mask generated in RELION to cryosparc because the mask cryosparc generated did not cover full area of my complex. Which job type should I choose to import mask? I used “import 3D volumes” but it seems I cannot drag the mask to inputs of homogeneous refinement.
Thank you so much.
—Da

2

Dear community,
The problem was just solved. I didn’t choose format to mask during the import.
—Da