The variable name has to be started always with an alphabet and no other special characters except the underscore and period are allowed in the variable names.
ವೇರಿಯಬಲ್ ಹೆಸರು ಯಾವಾಗಲೂ alphabet ನೊಂದಿಗೆ ಆರಂಭವಾಗಬೇಕು.