i wanna add method as primarykey on filedId

i am getting error on this method

so, please i am looking for solution.

========================================================

display fieldId primaryFieldId()
{
;
SubjectsTable = new SubjectsTable(this.)
return dictTable.primaryKeyField();
}

You need to initialize the dictTable as well:

DictTable dictTable = new DictTable(subjectsTable);

syntax error is coming…

Please be more specific on your issue…