dont work function sum.

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CrystalReports

Hi friends

I have a field called price
I want with cr v11 to show you the total price.
Prices shown in the table is 100,000,233,000
dont work function sum.
Shared numberVar sum1 ;WhilePrintingRecords; sum1:= ToNumber({table1.price)+sum1;
error: The string is non-numeric
how split ',' for 100,000,233,000 or replece "" with ","
please help me;