Hello, this is definitely possible. I assume you want to run a simulation with Part A, then a second simulation with Part B, and so on? You can use a Reference variable for the thermal description assigned to each semiconductor component, and then assign the filename to that part using this syntax in your script: partname = 'file:filename'; where filename is the relative path to the .xml file, and without the file extension. There is no example for this, but if you have any issues, post your files and I can help you get it working.