PAI event how to get the fieldname which triggered the event

Normally writing:
Field tab-field1 Module check1.
Field tab-field2 Module check2.

Now I wanna use one method.
Field tab-field1 Module check.
Field tab-field2 Module check.

Module check.
"get the fieldname which triggered the event
case fieldname.
when 'FIELD1'.
message 'input field1' type 'E'.
when 'FIELD2'.
message 'input field2' type 'E'.
endcase.
Endmodule.