How to add unlimited numbers on Mtn families and friend

Simply dial '180'' then you quickly press '1' , and '4' then '1' and you'll be told to add the number and you'll have to clear the '141 or 1141' that you'll see on your screen and add the number like this 0803000000#

Oga John,Great work,I tried it,d nos were added&viewable(*560#) but MTN never recognized them as being part of my FAF List apart from d existng 4, the thing chop my money. So,my conclusion via dis bitter experience is that you can actually add unlimited numbers which will nt work. I think oga John should have taken it upon himself to try out its 'workability' b4 posting