problem to use a10 tech

Hello

I try to use a10 tech with krc1 controller.But I have problem to change $pro_i_o valuue in $custom.DAT.I change it to "R1/SRC/ARCSPS()" already,but when I save all to harddisk and restart it return to "R1/SRC/SPS()".What wrong??? Please help me

thank you
nui

hello

Thank you for your ans.I have already solved it.I found I must change $pro_i_o in krc/mada/kl25o/steu/costum.dat.

Thank for your kindness
nui