M9k Ironsights not working on my SWEP

Trying to compile my first SWEP using M9k base. Already set up the code, iron sights, and running vector, but for some reason when I’m trying to aim, game just zooming the screen without moving the viewmodel. SWEP code based on the standard release from m9k website. On other M9k-based SWEPs from Workshop ironsights working correctly, as I remember, after one of the GMod updates there was some problem with SWEP code that needs to be fixed by SWEP creator to make ironsights working properly, am I right? How to get ironsights to work on M9k base?