Help

I don’t understand once i define a “Field” with type “string” following the “FIELD” with type “numeric”, then i recieve a FATAL_ERROR as following when insert:

INSERTjava.lang.ClassCastException: org.jetel.data.StringDataField cannot be cast to org.jetel.data.NumericDataField

HELP ME !!!

PS: I have verified that the type of attribute and the type of field are same.