simulate Angle modulation FM & PM

Using Matlab you are required to simulate Angle modulation (both FM and PM) , your simulation should include all appropriate libraries, comments, figures, and demonstrations to show and illustrate: (a) The time and spectrum plot of all signals at each stage of the modulation and demodulation (b) The use of appropriate filters. (c) The ability of any user of the program to change the values of the carrier frequency, massage frequency and modulation index.