Crystal Report Where Condition in Command

Hello Experts

Am a bit new to the Crystal Report, am trying to design a Layout for AP Invoice

where i want to bring the JE (Account, Account Name, Debit & Credit) details. am using a Sub Report to Fetch the Data & using only one Parameter DocKey@.

My Problem Is, am not able to get the Account name from OACT to this sub report. It is displaying All GL Accounts.

How can i fix it? I was trying with SQL Command

SELECT T0.[Account],  T1.[AcctName], T0.[Debit], T0.[Credit] FROM JDT1 T0  INNER JOIN OACT T1 ON T0.Account = T1.AcctCode but I dont know how to pass say " WHERE T0.[TransId] = ' {?Pm-?Dockey@}"

Whats the Right way to do it?

Thanks a Lot

Sandeep