Weapon assigning problem

Weapons not switching when pressing 2 or using wheel

In scripts/clients/default.bind.cs I have one code of line:

moveMap.bindCmd(keyboard, "2", "commandToServer('use',\"M4A1Carbine\");", "");

which corresponds from the
moveMap.bindCmd(keyboard, "1", "commandToServer('use',\"RocketLauncher\");", "");

Scripts under the M4A1Carbine.cs file contains:

datablock ItemData(M4A1CarbineAmmo)
{
// Mission editor category
category = "Ammo";

// Add the Ammo namespace as a parent. The ammo namespace provides
// common ammo related functions and hooks into the inventory system.
className = "Ammo";

// Basic Item properties
shapeFile = "art/shapes/weapons/SwarmGun/rocket.dts";
mass = 2;
elasticity = 0.2;
friction = 0.6;

// Dynamic properties defined by the scripts
pickUpName = "Rockets";
maxInventory = 20;
};

// ----------------------------------------------------------------------------
// Weapon Item. This is the item that exists in the world,
// i.e. when it's been dropped, thrown or is acting as re-spawnable item.
// When the weapon is mounted onto a shape, the Image is used.
// ----------------------------------------------------------------------------

datablock ItemData(M4A1Carbine)
{
// Mission editor category
category = "Weapon";

// Hook into Item Weapon class hierarchy. The weapon namespace
// provides common weapon handling functions in addition to hooks
// into the inventory system.
className = "Weapon";

// Basic Item properties
shapefile = "art/shapes/weapons/M4A1 Carbine/M4A1 Carbine.DAE";
mass = 3;
elasticity = 0.2;
friction = 0.6;
emap = true;

// Dynamic properties defined by the scripts
pickUpName = "M4A1 Carbine";
description = "Rifle";
image = M4A1CarbineImage;

// weaponHUD
previewImage = 'swarmer.png';
reticle = 'reticle_rocketlauncher';
};

Why is it not switching?