few things doesnt work

//Created using micke1101's hero generator for 1.2

#include <superheromod>
new gHeroID
new bool:gHasmhero[SH_MAXSLOTS+1]
new gPcvarHealPoints
new gPcvarm4a1Mult
//----------------------------------------------------------------------------------------------
public plugin_init()
{
        register_plugin("SUPERHERO all in one", SH_VERSION_STR, "Micke1101's Hero generator")

        new pcvarLevel = register_cvar("mhero_level", "12")
        new pcvarHealth = register_cvar("mhero_health", "12")
        new pcvarArmor = register_cvar("mhero_armor", "12")
        new pcvarGravity = register_cvar("mhero_gravity", "12")
        new pcvarSpeed = register_cvar("mhero_m4a1speed", "12")
        gPcvarm4a1Mult = register_cvar("mhero_m4a1mult", "12")
        gPcvarHealPoints = register_cvar("mhero_healpoints", "12")

        gHeroID = sh_create_hero("all in one", pcvarLevel)
        sh_set_hero_info(gHeroID, "mine hero", "its mine hero not your")
        sh_set_hero_hpap(gHeroID,  pcvarHealth,pcvarArmor)
        sh_set_hero_grav(gHeroID, pcvarGravity)
        sh_set_hero_speed(gHeroID, pcvarSpeed, {CSW_M4A1})
        set_task(1.0, "mhero_loop", _, _, _, "b")
        register_event("CurWeapon", "weapon_change", "be", "1=1")
}
public plugin_precache()
{
      precache_model("models/shmod/mhero_v_m4a1.mdl")
}
public sh_hero_init(id, heroID, mode)
{
        if ( gHeroID != heroID ) return

        switch(mode) {
            case SH_HERO_ADD: {
                gHasmhero[id] = true

                mhero_weapons(id)
                switch_model(id)
            }
          case SH_HERO_DROP: {
                gHasmhero[id] = false
                if ( is_user_alive(id) ) {
                    sh_drop_weapon(id, CSW_M4A1, true)
                }
            }
        }
}
public sh_client_spawn(id)
{
        if ( gHasmhero[id] ) {
            mhero_weapons(id)
        }
}
mhero_weapons(id)
{
    if ( sh_is_active() && is_user_alive(id) && gHasmhero[id] ) {
            sh_give_weapon(id, CSW_M4A1)
      }
}
//----------------------------------------------------------------------------------------------
public mhero_loop()
{
        if ( !sh_is_active() ) return

        static players[SH_MAXSLOTS], playerCount, player, i
        get_players(players, playerCount, "ah")
    for ( i = 0; i < playerCount; i++ ) {
            player = players[i]

            if ( gHasmhero[player] ) {
                sh_add_hp(player, get_pcvar_num(gPcvarHealPoints))
            }
        }
}
//----------------------------------------------------------------------------------------------
public client_damage(attacker, victim, damage, wpnindex, hitplace)
{
        if ( !sh_is_active() ) return
        if ( !is_user_alive(victim) || !is_user_connected(attacker) ) return

        if ( gHasmhero[attacker] && wpnindex == CSW_M4A1 ) {
            new headshot = hitplace == 1 ? 1 : 0

            new extraDamage = floatround(damage * get_pcvar_float(gPcvarm4a1Mult) - damage)
            if ( extraDamage > 0 ) sh_extra_damage(victim, attacker, extraDamage, "m4a1", headshot)
      }
}
public weapon_change(id)
{
        if ( !sh_is_active() || !gHasmhero[id] ) return

        if ( read_data(2) == CSW_M4A1 ) switch_model(id)
        if ( read_data(2) != CSW_M4A1 ) return
{
        if ( read_data(3) == 0 ) {
            sh_reload_ammo(id, 1)
          }
      }
}
public switch_model(id)
{
        if ( !sh_is_active() || !is_user_alive(id) || !gHasmhero[id] ) return

        if ( cs_get_user_shield(id) ) return
        if ( get_user_weapon(id) == CSW_M4A1 ) {
            set_pev(id, pev_viewmodel2, "models/shmod/mhero_v_m4a1.mdl")
      }
}

/Created using micke1101's hero generator for 1.2
#include <superheromod>
//----------------------------------------------------------------------------------------------
public plugin_init()
{
    register_plugin("SUPERHERO test", SH_VERSION_STR, "Micke1101's Hero generator")
    new pcvarLevel = register_cvar("kk_level", "1")
    gHeroID = sh_create_hero("test", pcvarLevel)
    sh_set_hero_info(gHeroID, "kkdfhd", "dhkd")
    register_event("CurWeapon", "weapon_change", "be", "1=1")
}
public plugin_precache()
{
      precache_model("models/shmod/kk_v_knife.mdl")
      precache_model("models/shmod/kk_p_knife.mdl")
}
public sh_hero_init(id, heroID, mode)
{
    if ( gHeroID != heroID ) return
    switch(mode) {
      case SH_HERO_ADD: {
      gHaskk[id] = true
      switch_model(id)
      }
          case SH_HERO_DROP: {
      gHaskk[id] = false
      if ( is_user_alive(id) ) {
      }
      }
    }
}
public weapon_change(id)
{
    if ( !sh_is_active() || !gHaskk[id] ) return
    if ( read_data(2) == CSW_KNIFE ) switch_model(id)
}
public switch_model(id)
{
    if ( !sh_is_active() || !is_user_alive(id) || !gHaskk[id] ) return
    if ( cs_get_user_shield(id) ) return
    if ( get_user_weapon(id) == CSW_KNIFE ) {
      set_pev(id, pev_viewmodel2, "models/shmod/kk_v_knife.mdl")
      set_pev(id, pev_weaponmodel2, "models/shmod/kk_p_knife.mdl")
      }
}

public heal_loop()
{
    if ( !sh_is_active() || !sh_is_inround() ) return;    //no point in healing people between rounds
   
    for ( new i = 1; i <= SH_MAXSLOTS; i++ )
        if ( is_user_alive(i) && gHasHero[i] )
            sh_add_hp(i, get_pcvar_num(gPcvarHealPoints));
}