second trunk in extensions.conf

I have this code in my extensions.conf file :
; dial a long distance outbound number to the SPAIN
; This 'o' Dial flag is VERY important for VICIDIAL on outbound calls,
exten => _00034XXXXXXXXX,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _00034XXXXXXXXX,2,Dial(${TRUNK}/${EXTEN:1},55,To)
exten => _00034XXXXXXXXX,3,Hangup
now I need to add other code for my second trunk (always for spain) : TRUNKX
can i use this :
exten => _00034XXXXXXXXX,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _00034XXXXXXXXX,2,Dial(${TRUNKX}/${EXTEN:1},55,To)
exten => _00034XXXXXXXXX,3,Hangup
I mean changing only {TRUNK} to {TRUNKX} ?
would the system know that I need to use the two trunks for same destination.
thanks in advance.
; dial a long distance outbound number to the SPAIN
; This 'o' Dial flag is VERY important for VICIDIAL on outbound calls,
exten => _00034XXXXXXXXX,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _00034XXXXXXXXX,2,Dial(${TRUNK}/${EXTEN:1},55,To)
exten => _00034XXXXXXXXX,3,Hangup
now I need to add other code for my second trunk (always for spain) : TRUNKX
can i use this :
exten => _00034XXXXXXXXX,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _00034XXXXXXXXX,2,Dial(${TRUNKX}/${EXTEN:1},55,To)
exten => _00034XXXXXXXXX,3,Hangup
I mean changing only {TRUNK} to {TRUNKX} ?
would the system know that I need to use the two trunks for same destination.
thanks in advance.