Unable to interpret "1,000.00" as a number..

Hi

I USe function moudle  C14W_NUMBER_CHAR_CONVERSION., for character conversion from variable to string...

In runtime debugging when string is changed from 1,000.00000 to 1000.00000(without comma) smartform ggets executed.but when there is a comma it dumps reading unable to interpret 1,000.00000 as  a number.

Data type is defined as "P".

Kindly Help.

Thanks and regards

Shashikala