how to design a simulink model for acoustic noise cancellation using NLMS?

hi, I am doing an simulink model for acoustic noise cancellation using different kinds of algorithm like lms, n-lms, block lms, fast block lms. IN NLMS only, i am not getting an proper output. Initially, i am reading an input speech using audio device block, and adding with random noise source. after applying NLMS algorithm, i am not getting an proper output. How could i keep the values of NLMS block and also other blocks? Also, i will place my designed model here, if you not understand my doubts.

regards, chinny