LSL Parse to list error?

/************************************************
Hi all! Need some help please!!

Integer -> String -> List using digits as separators
--> Append 0s to the front to create 4 digits

For some reason, works fine except on 88, 89, 98 and 99. Not sure why it's not separating those two digits.
Any ideas? As can be seen in output, 87 works just fine.

Output:::

Inventory Remaining: 87
INVENTORY COUNT: 0|0|8|7

Inventory Remaining: 88
INVENTORY COUNT: 0|0|0|88

Inventory Remaining: 89
 INVENTORY COUNT: 0|0|0|89
***************************************************/

updateNumbers()
{
    // faces 1 - 4
    itemCount = llGetInventoryNumber(INVENTORY_OBJECT);
    llSay(0, "Inventory Remaining: " + (string)itemCount);
    list numList = [];
    numList = llParseString2List((string)itemCount, [], ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]);
    if (llGetListLength(numList) > 4)
    {
        numList = ["9", "9", "9", "9"];
    }
    while (llGetListLength(numList) < 4)
    {
        numList = llListInsertList(numList, ["0"], 0);
    }
    llSay(0, "INVENTORY COUNT: " + llDumpList2String(numList,"|"));
}