Numeric strings and toNumber function

Hello,

I'm having problems with Crystal Reports for Eclipse when using some reports.

The problem comes with reports that contain toNumeric function with a data that is get from the database, it gives an error that says the string is non-numeric even if it is a numeric string. The formula in the reports looks like this:

...
numberVar cantidad_dias := ToNumber({MYVIEW.NumericText});
...

I know that using isNumeric condition it works well, but it works well too when using Crystal Reports 2008 without any condition, so I think it should work for Crystal Reports for Eclipse and return error only in the case that the string isn't numeric. Is it a bug?

Thanks