Error pops up when i start the map.
It says "SetSavedDvar(): The dvar "nightVisionPowerOnTime" does not exist."

Here is code:

#include maps\_utility;

#include common_scripts\utility;

#include maps\_utility_code;

#include maps\_anim;

#include maps\mo_tools;

#include maps\_vehicle_aianim;

#include maps\_hud_util;

#include maps\jake_tools;


#using_animtree( "generic_human" );



main()
{
	maps\_load::main();
	maps\_nightvision::main();
	
	precacheItem("gasmask");
	precachemodel("viewmodel_scuba_mask");
	
	
	level.player takeallweapons(); 
	level.player giveWeapon( "m4_silencer" ); 
	level.player givemaxammo( "m4_silencer" ); 
	level.player giveWeapon( "beretta" ); 
	level.player givemaxammo( "beretta" ); 
	level.player setviewmodel( "viewhands_sas_woodland" ); 
	level.player switchtoweapon( "m4_silencer" ); 
	thread PlayerMaskPuton();
}
PlayerMaskPuton()
{
	orig_nightVisionFadeInOutTime = GetDvar( "nightVisionFadeInOutTime" );
	orig_nightVisionPowerOnTime = GetDvar( "nightVisionPowerOnTime" );
	SetSavedDvar( "nightVisionPowerOnTime", 0.5 );
	SetSavedDvar( "nightVisionFadeInOutTime", 0.5 );
	SetSavedDvar( "overrideNVGModelWithKnife", 1 );
	SetSavedDvar( "nightVisionDisableEffects", 1 );

	wait( 0.01 ); //give the knife override a frame to catch up
	level.player ForceViewmodelAnimation( "gasmask", "nvg_down" );
	wait( 2.0 );
	SetSavedDvar( "hud_gasMaskOverlay", 1 );
	wait( 2.5 );

	SetSavedDvar( "nightVisionDisableEffects", 0 );
	SetSavedDvar( "overrideNVGModelWithKnife", 0 );
	SetSavedDvar( "nightVisionPowerOnTime", orig_nightVisionPowerOnTime );
	SetSavedDvar( "nightVisionFadeInOutTime", orig_nightVisionFadeInOutTime );
}

And here is my zone file:

ignore,code_post_gfx
ignore,common
col_map_sp,maps/test.d3dbsp
rawfile,maps/_anim.gsc
rawfile,maps/_nightvision.gsc
rawfile,maps/test.gsc
rawfile,maps/jake_tools.gsc
rawfile,maps/mo_tools.gsc
localize,test
sound,common,test,!all_sp
sound,test,test,all_sp
sound,generic,test,!all_sp
sound,voiceovers,atmo1,!all_sp
sound,requests,test,!all_sp
xmodel,viewhands_sas_woodland
weapon,sp/ak74u
weapon,sp/beretta
weapon,sp/mp5
localize,test
sound,ru_battlechatter,sp_sp_spot1_1e,all_sp
sound,uk_battlechatter,sp_sp_spott_1e,all_sp
sound,ab_battlechatter,sp_sp_fight_1e,all_sp
sound,us_battlechatter,sp_sp_fight_1e,all_sp
weapon,sp/ak47_grenadier
weapon,sp/gp25
weapon,sp/m4_silencer
weapon,sp/beretta
xmodel,viewmodel_scuba_mask
weapon,sp/gasmask
material,gasmask_overlay
rawfile,shock/nightvision.shock

xmodel,viewmodel_nvg
material,hud_icon_nvg
material,nightvision_overlay_goggles

Hmm, as strange as it may seem, everything works without errors.
Just in case, I created a module (Google Disk)