Lua Item infinite and the same id with decay time

[silveralol]

Hello folks, I'm with an idea, I need create a infinite version of an item and with the same id I need create with timer ... with movement script to handle with the skills attr...
exemple:
when you equip the item ID (1000) it will transform into item ID (2000)
the item ID (2000) has two types, one infinite that will never decay and a version with timer, how I can handle with decay time with that ?
my first idea is just use some name to check if the item is infinite or not
item ID (2000) infinite

you see a weapon (infinite)

item ID (2000) with decay time

you see a weapon, that will expire in 3 hours and 59 minutes.

also, how I can use a movement tag with script equip dequip

<movevent event="Equip" itemid="2000"  slot="ring" function="onEquipItem" />
<movevent event="DeEquip" itemid="2000" slot="ring" function="onDeEquipItem" />

also I need an exemple of the lua script with the correct usage of the tag
sorry for my bad english, I'm trying do my best

 

[silveralol]

bump... I have an idea, I will make it in the sources...
in every

item->startDecaying();

but I need check if in the name contains the words "infinite" how I make it in c++ ?

if (string.find(infinite)) {
 ---
};

of course, this code don't work, I don't know how put it in c++ files ...
so, if someone can help me, i'll be happy