I have one line command. This command works manually in cmd command windows. When I try with fme systemcaller it does not work. What could be the problem? Fme version 2021.1.1.0 build 21619
example:
xcopy "@Value(png_source)" "@Value(png_dest)*"
xcopy "C:\\gml\\F-12696263-A.png" "C:\\gml\\gml\\F-23-A.png*"