i have this Problem

muzammilkhan86

Dear All i have this Problem plz tell me how to solve it ???? need your help !

Generation exception: 'Offending attribute: 'greaterValues', Expression: 'numberOfFeedback >= 1000',
Error: 'Error during evaluation:>= not defined for object of type java.lang.String and java.lang.Double
" An operator failed to generate a new attribute, macro, or other object which is calculated on the fly.
Reason: offending attribute: 'greaterValues', Expression: 'numberOfFeedback', Error: 'Error during evaluation:>= not defined for object of type java.lang.String and java.lang.Double'

Offending Operator: Generate Attribute

muzammilkhan86

Oh great !
Dear all ! the problem has been solved the problem is that the data type of the selected attribute were not numeric so the exception occured.
when i change the type to numeric then the exception is solved.
so if u see such type of error then its means that there is some thing wrong in type of selected attribute.