According to your instruction. I copy the value parameter into block parameters You can see Whenever I see any error. I replace the value of block parameter from the source code. But in the last its giving me this error I am not able to fix this error. Please fix my all error then give me running file of matlab. What I need ? Please teacher corporate with me. I am not familiar with matlab. I have done according to my knowledge. But still I am facing the problems. Please fix each and everything from your sides. From the first day. I mentain each and every requirement here. But you are denying me that I didn’t mentain to use “ selector” and I didn’t mentain for “series and parallel” combination. Please use selector or battery in combination. And please please fix all the error in matlab