Hello,
you can modify the resulting string and e.g. insert comma signs. The following code demonstrates how to add thousands separatos to a string containing a formatted integer number:
var int32 number = 1234567890;
var string str = string( number );
var int32 len = str.length;
for ( ; len > 3; len = len - 3 )
str = str.insert( ',', len - 3 );
trace str;
At the runtime the code produces following outputs in the Log window:

Does it help you?
Best regards
Paul Banach