How can I get the values for initial and other steps of the biases and weights (except the final step which network stops)?

I used net = init(net); net.initFcn = 'initlay'; net.layers{1}.initFcn= 'initnw'; net.layers{1}.initFcn= 'initnw'; net.inputWeights{1,1}.initFcn ='randnr'; net.layerWeights{2,1}.initFcn = 'randnr'; net.biases{1}.initFcn = 'randnr'; for initialization of the wights and biases. I can get the final values of the biases and weights by inputweight=net.iw{1,1}; layerweight=net.lw{2,1}; biasinput=net.b{1,1}; biaslayer=net.b{2,1}; but I do not know how I can get the values for initial and other steps of the biases and weights (not final steps)before the network stops? I was wondering if some one can help me?