Combo / Invoice

[system]

I use the Combo custom on the invoice detail. I will need for this combo to connect on the table MiscChrg. The value when I open the combo is the description for miscchrg, it's ok. But when i select the description automatically is change by the misccode. On the display member if I had the Description, doesn't work, all the time the system problem with the invcdtl.description. I add miscchrg.description but doesn't work.

I will need on the database to return the mischrg.miscode, but when I open the invoice I will need to see the description and not the misccode. But I don't know what change ?

thanks

Vantage 8.03.408b