Substitution Variables in Data Exchange when Integrating with On-Premise EBS when utilizing EPM Inte

Summary

Can a substitution variable be utilized in a Data Integration->Option->Filters for Ledger Name and Period when utilizing EPM Integration Agent

Content

We have configured a data integration between FCC and EBS On-Premise utilizing EPM Integration Agent, Data Exchange and the pre-package adapter to EBS On-Premise.  This works fine; however, we have to hard code the Filters - Ledger and Period. So we are looking for options.  Below is what we are trying to make the integration a little more dynamic

Options:

1. Use "%" to bring in all Ledgers at the same time.  This didn't work.  We are probably not using the correct binary variable to represent ALL.  Leaving it blank, the filter didn't default to ALL and failed at the Import Step.