Hi DInesh,
Not sure I understand your scenario properly.
You get the balance from the datatable, then get currency from somewhere else and then I presume you concatenate the currency and the balance into another variable Flow.BalanceForTTS which you use in the play audio action.
How are you using the variable in the play audio action. As an expression or play-data or simple TTS.
I would suggest you output the value of the variable Flow.BalanceForTTS to a participant variable just before the play audio action, and then check what is displayed on the call for that participant variable. This should help you investigate.
Regards
------------------------------
Vineet Kakroo
FIL Fund Services (Bermuda) Limited
------------------------------