Manually Reconcile Foreign Transaction with Variance

 Client has multicurrency bank account which we are reconciling using Cash Management.  Currently we have the autoreconciliation tolerance set to 0.  So unless the transaction and the Bank Statement activity match perfectly, they remain unreconciled. 

How can I manually reconcile the transaction with the statement line and apply the variance to the Charges/Loss account like would happen when autoreconciliation tolerance is specified to hit Gain/Loss Account?

Example.

Functional Currency is USD

Invoice = 100 Euro

Payment = 100 Euro or $140(comes to CE and is available in USD for reconciliation)

Bank Shows Activity for $138. 

This scenario would not autoreconcile because of the 2$ variance.  I would like this $2 to hit the gain/loss account when I manually reconcile.  When I click the RECALCULATE button, nothing happens and the variance remains.