Since the last update I improved the simulation. The current status I uploaded to GitHub https://github.com/Chris-deerleg/FEMM-4.2. Above in the image you see how easy it it is to build a simulation. First create the simulation environment with e.g. sim1=SimBox:new(.........) for the description of the parameter have a look in the function SimBox. As next build a array m={} and fill it with magnets for ... m[i]=Magnet:new(sim1.SimName...). By calling the new function and the paramter sim1.SimName the magnets are placed in the environment. After the a exsample of how to remove a magnet by m[2]:delMagnet(). This will be later useful when I start to move the components. Last but no least sim1:solve() this function starts the creation of the nice colored image on the right.