Detecting when player selects an item?

Hello, I dont know how to use:

Code:

void OnItemSelected(ItemInstance item, EquippedHandlerServer player, int slot, byte sessionId)
{
    Puts("OnItemSelected works!");
}

I need:
> Detecting when player select Ruby and who does it.
> Remove select Ruby from player inventory.

 

anyone help? :/

 

Code:

void OnItemSelected(ItemInstance item, EquippedHandlerServer player)
{
    if(item.Item.GetNameKey() == "Items/Ruby")
    {
        PlayerIdentity identity = player.gameObject.GetComponent<PlayerStatManager>().AttachedIdentity;
        Puts(identity.Name.ToString() + " selected a Ruby");
        //identity.Name.ToString() <-- This is the name of the player.
        //identity.SteamId.ToString() <-- This is the SteamID of the player.
    }
}