How to format Numeric using 1000 Separator ","

Hi,

Please help me to format the numeric which is used 1000 Separator ","

value1= "2,400";
value2 = "1";

value = aqConvert["VarToFloat"](value1) + aqConvert["VarToFloat"](value2);

>> the result value is "2401"

Expected that the value is format is "2,401"

Thanks for your helping