Anisotropic Filtering not change

Hello
I’m making a game for android but I have a problem:
I need to change anisotropic Filtering.
But this: QualitySettings.anisotropicFiltering = AnisotropicFiltering.ForceEnable; does not work.
(In the quality setting I still have: Anisotropic Textures Disabled)
Please help me.

No one knows?
:frowning: