Sim Command Unable to Block Diagram

Dear Sir, I have a question and kindly need your help. Will be much appreciated your prompt answer. I created feed forward back propg ANN trained and tested. I save it mywork (save net). Now, I want to simulate with new data and get the result according trained model. I did load net, no problem it loaded. When I use sim ('net','newdata'). There is message coming unable to load block diagram 'net' newdata is the name of the workspace file which includes input values that I want to get theirs target values. I am using Matlab R2015b. Thanks a lot Sinem

[Sinem Kaymak]

Please any helpp??