Question with .lang and global variables

[theabcs]

Hey, I know a little about scripting but i need some help. I have a global variable set and i would like it to display when the player looks at a custom item in the inventory. Is there any way I can display the value of the variable in the .lang file during an entry script? So for example:

<CATEGORY Name="Inventory">
<Entry Name="ItemName_item">blah blah blah</Entry>
<Entry Name="ItemDesc_item"> XXXXXXXXXXXXX </Entry>
</CATEGORY>

I would like to somehow insert the value of the global variable in the "XXXXXXXXXXXXX" so when the player moves their mouse over, they see the set amount. Is this possible?