Step1)User inputs the data in the grid(table is invdetail)
step2)press save 'button',press 'print' button (there will call external prg to do some calculation
step3)the report is printed correctly
step4)user press "new" button again,
There is an error prompt "ThisFormSet can be only used withthin a method"
if i press "ignore", another error is prompt"Alias 'invdetail' is not found.

That table 'invdetail' is put in the dataenvironment (buffermode is 5)
Pls help, Everytime the user "new" the invoice, everthing the error is prompt.

Thanks in advance