Fruit Machine Chat

hi guys i have the above mentioned fruit machine and was wondering how you know it is actually £250.00 jackpot its set to 25p per ply so does that mean its set for 250 pay outs or is there another setting for this, the reason i ask is a few time i have got into the middle ring and when i lost 96.00 on a bamble high or low it gives you winning spins and i kept going and going then came up jackpot but only payed out 100. im wondering if this is normal for this machine and will only payout the jackpot on the fruits on the win line with the reels.

help please

regards
scot