The output language is not always the one specified

Running the following code:

exten => *123,1,Answer()
    same => n,Set(CurrTimeHours=-1)
    same => n,Set(Count=-1)
    same => n(loop),Set(Count=$[${Count}+1])
    same => n,Set(CurrTimeHours=${Count})
    same => n,GoSub(subPolishTime,s,case${CurrTimeHours})
    same => n,agi(googletts.agi,"${Count}",en)
    same => n,agi(googletts.agi,"${CurrTimeHours}",pl)
    same => n,Wait(0.1)
    same => n,GotoIf($[${Count}=23]?end:loop)
    same => n(end),Hangup(22)

[subPolishTime]
exten => s,1,NoOp(Case ${CurrTimeHours})
    same => n(case1),Set(CurrTimeHours=pierwsza)
    same => n,Return()
    same => n(case2),Set(CurrTimeHours=druga)
    same => n,Return()
    same => n(case3),Set(CurrTimeHours=trzecia)
    same => n,Return()
    same => n(case4),Set(currTimeHours=czwarta)
    same => n,Return()
    same => n(case5),Set(CurrTimeHours=piąta)
    same => n,Return()
    same => n(case6),Set(CurrTimeHours=szósta)
    same => n,Return()
    same => n(case7),Set(CurrTimeHours=siódma)
    same => n,Return()
    same => n(case8),Set(CurrTimeHours=ósma)
    same => n,Return()
    same => n(case9),Set(CurrTimeHours=dziewiąta)
    same => n,Return()
    same => n(case10),Set(CurrTimeHours=dziesiąta)
    same => n,Return()
    same => n(case11),Set(CurrTimeHours=jedenasta)
    same => n,Return()
    same => n(case12),Set(CurrTimeHours=dwunasta)
    same => n,Return()
    same => n(case13),Set(CurrTimeHours=trzynasta)
    same => n,Return()
    same => n(case14),Set(CurrTimeHours=czternasta)
    same => n,Return()
    same => n(case15),Set(CurrTimeHours=piętnasta)
    same => n,Return()
    same => n(case16),Set(CurrTimeHours=szesnasta)
    same => n,Return()
    same => n(case17),Set(CurrTimeHours=siedemnasta)
    same => n,Return()
    same => n(case18),Set(CurrTimeHours=osiemnasta)
    same => n,Return()
    same => n(case19),Set(CurrTimeHours=dziewiętnasta)
    same => n,Return()
    same => n(case20),Set(CurrTimeHours=dwudziesta)
    same => n,Return()
    same => n(case21),Set(CurrTimeHours=dwudiesta pierwsza)
    same => n,Return()
    same => n(case22),Set(CurrTimeHours=dwudiesta druga)
    same => n,Return()
    same => n(case23),Set(CurrTimeHours=dwudiesta trzecia)
    same => n,Return()
    same => n(case0),Set(CurrTimeHours=dwudziesta czwarta)
    same => n,Return()

Results in Google TTS saying the number 0 in English, the numbers 1 to 3 in Polish and numbers 4 to 23 in English again. It should be saying numbers 0 to 23 in English, not a mix of the two.

core show version Asterisk 11.1.0 built by abuild @ build22 on a x86_64 running Linux on 2012-12-21 23:25:47 UTC

cat /proc/version Linux version 3.4.11-2.16-default (geeko@buildhost) (gcc version 4.7.1 20120723 [gcc-4_7-branch revision 189773](SUSE Linux) ) #1 SMP Wed Sep 26 17:05:00 UTC 2012 (259fc87)

perl -v This is perl 5, version 16, subversion 0 (v5.16.0) built for x86_64-linux-thread-multi

zaf / asterisk-googletts

The output language is not always the one specified #6