Gotcha. Thanks for the education. Sorry, I was referring to the Import file as the mapping file. I will get the terminology down soon, I promise. Here is the LMS file and the xlights_rgbeffects.xml file. Thank you for your help. I have plenty of time until next light season. But wanted to make sure I had an understanding of xlights by going through the tutorials first. Then ran into this minor issue. I really love this software. Tons easier to use. Thanks again.