这两天写了个给僵尸加血的插件，遇到一个问题，百思不得其解

#include <amxmodx>
#include <fun>
#include <zombieplague.inc>


new const g_item_name[] = { "自动补血 Made by epic" }
const g_item_cost = 5
new g_itemid_HealthRegen;
new PLUGIN_NAME[]      = "HPRegen epic"
new PLUGIN_AUTHOR[]      = "epic"
new PLUGIN_VERSION[]      = "2.8"

new bool:g_HPRegen[33]
public plugin_init()
{
     register_plugin(PLUGIN_NAME, PLUGIN_VERSION, PLUGIN_AUTHOR);
    g_itemid_HealthRegen = zp_register_extra_item(g_item_name, g_item_cost, ZP_TEAM_ZOMBIE);

     register_event("ResetHUD", "Event_ResetHUD", "be");
     register_event("DeathMsg", "Event_DeathMsg", "a");
    register_event("HLTV", "EVENT_round_start", "a", "1=0", "2=0");
}

public client_connect(id) {
     g_HPRegen[id] = false
}

public Event_ResetHUD(id)
{
     if(!is_user_connected(id) || !is_user_alive(id)) {
           return PLUGIN_CONTINUE
     }
     
     if(g_HPRegen[id])
     {
           if(!task_exists(id)) {
                 set_task(1.0, "Task_HealthRegen", id, "b")
           }
     }
     return PLUGIN_CONTINUE
}

public Event_DeathMsg() {
     if(task_exists(read_data(2))) {
           remove_task(read_data(2))
     }
}

public Task_HealthRegen(id)
{
     if(!is_user_alive(id) || !is_user_connected(id) || !g_HPRegen[id])
     {
           if(task_exists(id)) {
                 remove_task(id)
           }
           return PLUGIN_CONTINUE
     }
     
     new iHealth = get_user_health(id)
     if(iHealth < 20000)
     {
           set_hudmessage(0, 255, 0, -1.0, 0.65, 0, 1.0, 2.0, 0.1, 0.1, 4)
           show_hudmessage(id,"<< !!Healing!! >>")
           emit_sound(id,CHAN_VOICE,"items/medshot4.wav", 1.0, ATTN_NORM, 0, PITCH_NORM)
           message_begin(MSG_ONE, get_user_msgid("ScreenFade"), { 0, 0, 0 }, id)
           write_short(1<<10)
           write_short(1<<10)
           write_short(1<<12)
           write_byte(0)
           write_byte(0)
           write_byte(255)
           write_byte(50)
           message_end()
           
           iHealth += 10
           set_user_health(id, iHealth)

set_task(1.0,"Task_HealthRegen",id)

           if(get_user_health(id) > 20000)
          {
                emit_sound(id,CHAN_VOICE, "fvox/medical_repaired.wav", 1.0, ATTN_NORM, 0, PITCH_NORM)
                 set_user_health(id, 20000)
           }
     }
     return PLUGIN_CONTINUE
}
public zp_extra_item_selected(id, itemid)
{
     if (itemid == g_itemid_HealthRegen){

set_task(1.0,"Task_HealthRegen",id)
           g_HPRegen[id]++;
           client_print(id, print_chat, "You have now %d HPRegen", g_HPRegen[id]);
     }
}

public EVENT_round_start()
{
     for (new id; id <= 32; id++) g_HPRegen[id] = false;
}

#include <amxmodx>
#include <fun>
#include <zombieplague>

new g_itemid999
new cvar_hp[] = "kevin_hp"    

public plugin_init()
{
       register_plugin("[ZP] Additional Extra Items", "0.1", "Example")
       register_cvar(cvar_hp, "10");
       // Register the new items and store their IDs for reference
       g_itemid999 = zp_register_extra_item("My Extra Item 1", 5, ZP_TEAM_ZOMBIE)
}

// Item Selected forward
public zp_extra_item_selected(id, itemid)
{
       // check if the selected item matches any of our registered ones
       if (itemid == g_itemid999)
                     client_print(id, print_chat, "你購買了自我復原!");
set_task(1.0,"extra_hpppp",id)
}
public extra_hpppp(id) {  
new extra_hp = get_cvar_num(cvar_hp)  
new maxhp = 20000 
new hp = get_user_health(id)   
if (is_user_alive(id) && (hp < maxhp) && zp_get_user_zombie(id)) { 
set_user_health(id, hp + extra_hp)
set_task(1.0,"extra_hpppp",id)
}
else {
if (is_user_alive(id) && (hp > maxhp))
remove_task(id)
}
}