databaseManager.getNextSequence issu

I have table, name for_issu within example_data server and that table has field req_no with an auto entered sequence value.
Now i have form based on different table has a global field type integer and have a button. i want the would be next value of the sequenc at the global field when the button is clicked.
Now i attached a method with the onAction event of that button.
my code is

globals.gbooking_req_no = databaseManager.getNextSequence(example_data, for_issu, req_no)

But it gives an error “example_data” notdefined

change this:

globals.gbooking_req_no = databaseManager.getNextSequence(example_data, for_issu, req_no)

into this:

globals.gbooking_req_no = databaseManager.getNextSequence("example_data", for_issu, req_no)

Thanks Marcel,
It is working nice.

please any one , help me ,
Actually my problem is , I generate next sequence by getNextSequence,
now my next sequence is generated, then i want to insert data to the others fields of that table aginst this sequenc no.
My problem is, when i insert data to the other field I fired newRecord and it increse the sequnce. My all data saved against this sequence rather than the sequence which is generated by getNextSequence.