cannot validate grid multiple column field value

Hi

It seems the FormDataFieldEventHandler event handler can only validate 1 field at a time, is there a way for me to validate 2 field value like (field1 == something and field2 == something)? currently FormDataObject datasource cursor only returns 1 field with value and the rest are null, even though the grid current row has value for all column field.

Regards,

Red