Beginner in Vapor

Hi, I am a beginner in Vapor. I installed the Vapor GUI and went through the documentation. I get an idea of how to use it. But, I have extrapolated ‘*.sav’ save files fro SSWIDL with values Bx, By, and Bz in 3D. Before using the Vapor, I need to convert these save files into VDF files. But I tried with vdf_create.pro, vdf_setnumtimes.pro,vdf_write.pro,etc., are not available in the downloaded Vapor version. With Python, I tried, but it also doesn’t provide proper ways to convert. Could you please advise me on what I should do? I need to learn from professionals. Please provide me some guidance, too. Thank you