FormStringControl does not accept the value

Hello All,

I have created the fields dynamically through FormStringControl class in a grid and fields get generated and displayed successfully on the form but when i try to assign values to the fields , it does not accept any value .

Following is the snapshot for which i am facing an error,

FormStringControl     fControl;

;

fControl = new FormStringControl();

fControl = Grid.addDataField(tablename_ds.id(),fieldnum(tablename,fieldname));

fcontrol.label(tablename.fieldname);

fcontrol.allowEdit(false);

fControl.text('lalit');

At the last line of code it throws error.

What should i do to assign the values to the field ??

Please help