[Arkarr]

Sorry if code is totally messy, updated the main post.
I don't think the problem is from the declaration of cookies because it's should return me a invalid handle to cookie when I try to read/write into, am I right ?

And well, yes, it does, the contain is always != 0.

PHP Code:

    "1" //test item
    {
        "item_name"      "Health Potion"
        "attribut_name"  "health regen"
        "value"           "5"
        "cost"           "25"
        "time"              "10"
        "override"         "0"    
        "class"          "ALL"
    } 


[RedSword]

I'd say the problem lies maybe in either the .cfg or a side code.

I'd try to print to server every single value you can think of during the save & load of and try to debug with that. And maybe before try to simply reload the cookie directly after having saved it (and try to load an arbitrary cookie that you know has a good value; probably getting the wrong string somehow).

[Arkarr]

Yup, already done this :

PHP Code:

!sm_rpgtest

public Action:TestCookie(client, args)
{
    SetClientCookie(client, Cookie_Upgrade_lvl[3], "4");
    PrintToChat(client, "cookie, set!");
    RestoreUpgrade(client);
    PrintToChat(client, "restored !");
    return Plugin_Handled;
} 


And if I open my menu, the cookie Cookie_Upgrade_lvl[3] is correctly set to 4 and effect are correctly apply!

STILL NOT WORKING D;

[backwards]

Alright so I may have solved your issue as I ran into this issue too. The cookies registered can't have the same base name and a unique descriptor argument. Despite what information i've read online about the purpose of the descriptor to be created to uniquely identify a cookie further to prevent clashes with other plugins using basic cookie names that may be re-used in other plugins.

Defining like this will cause the issues.

PHP Code:

g_hTerroristSkin = RegClientCookie("PlayerSkins_P", "Players Custom Skin Selection (Terrorist)", CookieAccess_Public);
g_hCounterTerroristSkin = RegClientCookie("PlayerSkins_P", "Players Custom Skin Selection (Counter-Terrorist)", CookieAccess_Public); 


After defining them this way all the issues went away.

PHP Code:

g_hTerroristSkin = RegClientCookie("PlayerSkins_P_1", "Players Custom Skin Selection (Terrorist)", CookieAccess_Public);
g_hCounterTerroristSkin = RegClientCookie("PlayerSkins_P_2", "Players Custom Skin Selection (Counter-Terrorist)", CookieAccess_Public);