Unsafe unity 5.4 up not working (Kinect V2 getting BodyIndex) ?

Hello.

I want to to create texture with BodyIndex image for cutout effect. From Kinect v2 sdk i found out code but it has unsafe method (because value is IntPtr and there is no way to know it's length (i think so)). I created gmcs file with -unsafe in it but it didn't helped after i reset unity error is still visible. Am I doing something wrong ? (also when i try to view properties of project in VS it don't show up just blinks and nothing).

And here are my 2 questions:

Is this feature ( unsafe) is disabled in unity personal or general unity 5.4 and up ? And if it is avaible than what I'm doing wrong?

Is there any other way exluding pointers to get Bodyindex image ?

Thanks for answer :)