CPF4131

Hello everyone.
 My program has to print slightly different reports according to user input.
Since the reports are very similar, and have identical record names I was
trying to choose dynamically the prtf using extfile and a variable.
So, the specification line goes:
 FOutput O E PRINTER OFLIND(*IN10)
F EXTFILE(OPTINFORM)
F USROPN
 I create *VENTA/OFERTVENT*, *VENTA/OFERTVENC*, and then
*OUTPUT*temporarily for compile time.
Then, according to user input I either do:
 OPTINFORM = 'VENTA/OFERTVENT';
or OPTINFORM = 'VENTA/OFERTVENC';
 And then "*open Output;*"
 The thing it only works when it has to use the last PRTF I compiled.
If I try to use OFERTVENC, but the last in the compile queue was OFERTVENT,
it will give me a level check error. If I try to use OFERTVENT, and the last
one was OFERTVENC, likewise.
 What's the workaround? I presume that I could re-compile the PRTFs with
level-check *NO, but that's frowned upon around here. Any other solution?
 Regards,
 I.-