How to get the three input data in the example program（WBPR.srn5）？

In the WBPR.srn5 example program, how to obtain  heart.fld, thorax.fld and  bsp.mat. I know it was obtained by using ECGSim software, but I used the software to export without these three files, so I want to ask how to obtain these three files?
I want to get a set of epicardial and body surface potential data to verify the new algorithm, but I don't know how to get it using ecgsim.