How to get the ALV data from transaction FAGLB03 (program FAGL_ACCOUNT_BALANCE)

I want to retrieve the ALV data generated by the transaction FAGLB03 (program FAGL_ACCOUNT_BALANCE), by using CL_SALV_BS_RUNTIME_INFO (code below), but the execution fails during the execution of FAGL_ACCOUNT_BALANCE: the job aborts with the message DC006 of type Error (“Control Framework: Fatal error - GUI cannot be reached”). How to retrieve the ALV data via FAGLB03 or FAGL_ACCOUNT_BALANCE only? Thanks.