hi. i'll bother you again

i build aneural network with backpropagation learning teacher

i insert value of error rate = 0.1 and learning rate = 0.2, with an input float input[] = new float [80] and output float output[] = new float [36]

while in training, in first iteration error value are more than 500, and when the iteration more than 400 times the error value stack in 324.0

this error value won't decrease even the ieteration reach 5000 times

so what's wrong with my neural network???

please hlep me

thanks before