How to get return value from 'Execute procedure' in Oracle Apps Forms R12 personalization

XXPROG.SUBMIT function returns varchar2.

But how to capture return value in form personalization builtin 'Execute procedure' as below :

'begin XXPROG.SUBMIT(''' || ${item.line.order_number.value} || ''',''' || ${global.g_temp_type.value} || ''' ); end'

Thanks in Advance!