Help fixing an Gunxp Unlock Model Problem

#include <amxmodx>
#include <engine>
#include <gxm_shop>
#include <hamsandwich>
#include <fakemeta>
#include <cstrike>

#define IsPlayer(%1) (1 <= %1 <= g_maxplayers)
new ItemIndex
new cvar_knock;
const m_flNextSecondaryAttack = 47;
const m_pPlayer    = 41
const m_flPrimaryAttack = 46;
static bool:Knife[33]

new const KNIFE_MDL[] = "models/gunxp/v_baseball.mdl";    

new g_maxplayers, damage_knife, bool:g_KNIFE[33];

public plugin_precache()
    engfunc(EngFunc_PrecacheModel, KNIFE_MDL);

public plugin_init()
{
    register_plugin("TEST KNIFE BASEBAT" , "1.0" , "Invis");
    
    RegisterHam(Ham_TakeDamage, "player", "Ham_Damage");

    register_event("CurWeapon",    "Event_CurWeaponKNIFE", "be", "1=1")
    register_event("Damage" , "event_Damage" , "b" , "2>0");

    ItemIndex = gxm_register_knife("Base", 1000, 0, 1, 0, "KNIFE")
    
    damage_knife = register_cvar("gxm_knife_damage", "2.0");
    cvar_knock = register_cvar("gxm_knife_knocks" , "50");
    
    g_maxplayers = get_maxplayers();
}

public gxm_knife_selected(id, itemid)
{
    if(ItemIndex == itemid)
    {
        Knife[id] = true
    }
}

public client_connect(id)
    g_KNIFE[id] = false;

public Event_CurWeaponKNIFE(id)
{
    if (!g_KNIFE[id] || cs_get_user_team(id) == CS_TEAM_T)
        return PLUGIN_CONTINUE;

    new Gun = read_data(2);
    
    if(Gun == CSW_KNIFE)
        set_pev(id, pev_viewmodel2, KNIFE_MDL);
    
    return PLUGIN_CONTINUE;
}

public event_Damage(id)
{
    if(!is_user_alive(id))
        return PLUGIN_CONTINUE;

    new weapon, attacker = get_user_attacker(id, weapon);

    if(!is_user_alive(attacker))
        return PLUGIN_CONTINUE;

    if (!g_KNIFE[attacker])
        return PLUGIN_CONTINUE;

    if(weapon == CSW_KNIFE && cs_get_user_team(attacker) == CS_TEAM_CT)
    {
        new Float:vec[3];
        new Float:oldvelo[3];
        get_user_velocity(id, oldvelo);
        create_velocity_vector(id , attacker , vec);
        vec[0] += oldvelo[0];
        vec[1] += oldvelo[1];
        set_user_velocity(id , vec);
    }

    return PLUGIN_CONTINUE;
}

public Ham_Damage(id, inflictor, attacker, Float:damage, damagebits)
{
    if ( !(1 <= attacker <= g_maxplayers) || !g_KNIFE[attacker] || cs_get_user_team(attacker) == CS_TEAM_T || damagebits == 16777216)
        return HAM_IGNORED;

    new weaponx = get_user_weapon(attacker, _, _);
    if(weaponx == CSW_KNIFE && damagebits != 16777216)
    {
        SetHamParamFloat(4, damage * get_pcvar_float(damage_knife));
        return HAM_HANDLED;
    }
    return HAM_IGNORED;
}

// Stock by the one and only, Chronic :P
stock create_velocity_vector(victim,attacker,Float:velocity[3])
{
    if(!is_user_alive(attacker))
        return 0;

    new Float:vicorigin[3];
    new Float:attorigin[3];
    entity_get_vector(victim   , EV_VEC_origin , vicorigin);
    entity_get_vector(attacker , EV_VEC_origin , attorigin);

    new Float:origin2[3]
    origin2[0] = vicorigin[0] - attorigin[0];
    origin2[1] = vicorigin[1] - attorigin[1];

    new Float:largestnum = 0.0;

    if(floatabs(origin2[0])>largestnum) largestnum = floatabs(origin2[0]);
    if(floatabs(origin2[1])>largestnum) largestnum = floatabs(origin2[1]);

    origin2[0] /= largestnum;
    origin2[1] /= largestnum;

    velocity[0] = ( origin2[0] * (get_pcvar_float(cvar_knock) * 3000) ) / get_entity_distance(victim , attacker);
    velocity[1] = ( origin2[1] * (get_pcvar_float(cvar_knock) * 3000) ) / get_entity_distance(victim , attacker);
    if(velocity[0] <= 20.0 || velocity[1] <= 20.0)
        velocity[2] = random_float(200.0 , 275.0);

    return 1;
}

#if defined _gxm_shop_included
    #endinput
#endif

#define _gxm_shop_included

native gxm_register_gun( const Name[ ], const XP, const Level = 0, const VIP = 0, const Round = 0, const Type[ ] = 0);
native gxm_register_item( const Name[ ], const XP, const Level = 0, const VIP = 0, const Round = 0, const Type[ ] = 0);
native gxm_register_pistol( const Name[ ], const XP, const Level = 0, const VIP = 0, const Round = 0, const Type[ ] = 0);
native gxm_register_knife( const Name[ ], const XP, const Level = 0, const VIP = 0, const Round = 0, const Type[ ] = 0);
native gxm_register_grenade( const Name[ ], const XP, const Level = 0, const VIP = 0, const Round = 0, const Type[ ] = 0);



forward gxm_gun_selected( Player, ItemIndex);
forward gxm_item_selected( Player, ItemIndex);
forward gxm_pistol_selected( Player, ItemIndex);
forward gxm_knife_selected( Player, ItemIndex);
forward gxm_grenade_selected( Player, ItemIndex);