Max blocking factor problem

Hello, I'm using max blocking factor for this query but it seems that is not working correctly, idk if i'm doing it wrong pls help.

SELECT rbukrs docnr ryear segment prctr

     INTO TABLE t_faglflexa

     FROM faglflexa

     FOR ALL ENTRIES IN i_detalle_aux

     WHERE  rbukrs       = i_detalle_aux-bukrs

     AND       docnr         = i_detalle_aux-belnr

     AND       ryear          = i_detalle_aux-gjahr

     AND       rldnr           = '0L'

     %_HINTS ORACLE '&MAX_IN_BLOCKING_FACTOR 100&&MAX_BLOCKING_FACTOR 100&'.

I checked in st12 and it's no calling it.

Ty all.