No zipfile in system.io.compression

Good afternoon,

I have a problem with import system.io.compression.
I have installed .net framework 4.6 but in UiPath I can see 4.0… I know that is a minor bug.
But the problem is that import system.io.compression does not have method .zipFile. What i must do import this to UiPath?

I have only compressionlevel, CompressionMode, DefalteStream and GzipStream

Topic to close. I found the solution.

Maybe this is stupid but I could not import system.io.compression.filesystem.
My soultion is to use different project where this was imported and by using “invoke method” copy this block to my project.
For me it works.

Best regards.