Annual budget 2015 negative BQ020/BQ023

hi ,

   We need input negative budget at current year in CJ30, but system don't permit input negative budget at current year.  We don't activate FM.

   I try to configure the message BQ020/BQ023 to warning, but system still  don't permit input negative budget at current year.

   After debug CJ30, I found if we input Budget tolerance in table FM01TOL, system will permit input negative budget in current year. The form is FM23_GET_TOLERANCE_VALUE.  because we don't activate FM, so we can't input data to table FM01TOL except input data in se16n.

   So I have a idea,   develop enhancement in FM23_GET_TOLERANCE_VALUE, define user-table refer FM01TOL , query data from user-table replace FM01TOL.

   how about it ?

   and have other solution to input negative budget at current year in CJ30?

   Thanks.

sam.