Need help with change weapon function

[NetherSleep]

Hello, i want to bind for example KEY_LALT + KEY_B for change weapon to weapon_physgun. I write this but it's don't working:

hook.Add( "PlayerSwitchWeapon", "ChangeWeapon", function( ply )
if input.IsKeyDown( KEY_LALT ) and input.IsKeyDown( KEY_B ) then
	ply:SetActiveWeapon( "weapon_physgun" )
end
end)

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[c👌de_g🎷]

You'll have to do the key detection in a Move hook server-side and network it to the server. Then, the server will have to call SelectWeapon.