words are divided at the end of line in Sinhala text

[#1]

I am using Sinhala (an Asian language) fonts such as "fmabhaya". In all Sinhala fonts the period (.) character of English fonts represents a specific letter of the Sinhala alphabet.(ග)

So when I type in Sinhala, lines break at the default period character of the English font. Therefore, Sinhala words always break when period (.) is typed.

I used "world ready paragraph composer" in Indesign as well, but the same problem occurs. How can I fix this. 

[#2]

I am using Sinhala (an Asian language) fonts such as "fmabhaya". In all Sinhala fonts the period (.) character of English fonts represents a specific letter of the Sinhala alphabet.(ග)

So when I type in Sinhala, lines break at the default period character of the English font. Therefore, Sinhala words always break when period (.) is typed.

I used "world ready paragraph composer" in Indesign as well, but the same problem occurs. How can I fix this.