saving recording path on the cdr ( FreePBX)

1. [macro-record-enable]
2. include => macro-record-enable-custom
3. exten => s,1,GotoIf($["${BLINDTRANSFER}" = ""]?check)
4. exten => s,n,ResetCDR(w)
5. exten => s,n,StopMixMonitor()
6. exten => s,n(check),ExecIf($["${ARG1}"=""]?MacroExit())
7. exten => s,n,GotoIf($["${ARG2}"="Group"]?Group:OUT)
8. exten => s,n(Group),Set(LOOPCNT=${FIELDQTY(ARG1,-)})
9. exten => s,n,Set(ITER=1)
10. exten => s,n(begin),Noop(macro-record-enable group loop begin)
11. exten => s,n,Set(TEXTEN=${CUT(ARG1,-,${ITER})})
12. exten => s,n,Set(CALLFILENAME=g${TEXTEN}-${STRFTIME(${EPOCH},,%Y%m%d-%H%M%S)}-${UNIQUEID})
13. exten => s,n,Goto(record)
14. exten => s,n(continue),Set(ITER=$[${ITER}+1])
15. exten => s,n,GotoIf($[${ITER}<=${LOOPCNT}]?begin)
16. exten => s,n,MacroExit()
17. exten => s,n(OUT),GotoIf($["${ARG2}"="IN"]?IN)
18. exten => s,n,Set(CALLFILENAME=OUT${ARG1}-${STRFTIME(${EPOCH},,%Y%m%d-%H%M%S)}-${UNIQUEID})
19. exten => s,n,Goto(record)
20. exten => s,n(IN),Noop(macro-record-enable IN)
21. exten => s,n,Set(CALLFILENAME=${STRFTIME(${EPOCH},,%Y%m%d-%H%M%S)}-${UNIQUEID})
22. exten => s,n(record),MixMonitor(${EVAL(${MIXMON_DIR})}${CALLFILENAME}.${MIXMON_FORMAT},,${MIXMON_POST})
23. exten=>s,n,Set(CDR(userfield)=${MIXMONITOR_FILENAME})
24. exten => s,n,MacroExit()

I modify the recording macro adding the  additional line to  extensions_override_freepbx.conf

I just added this line  exten=>s,n,Set(CDR(userfield)=${MIXMONITOR_FILENAME})