how to show score as variable in an item lore ?

Hello,
How do you show variables using a MythicMobs items ? I would like to show the score of the player with a mythicmobs item.

I have define a score like this
/scoreboard objectives add money dummy
Then I have given score point to a player

Now I want to display that score using an item (like a money purse). Is that possible using a mythicmobs item ?
I have tried to create an item with

Lore:
- <score.money.money>

but it seems I can not display any variables either in Lore: or Display:...

how to show score as variable in an item lore ?