diff --git a/week4/files/box_part1.20250506-162749.FCBak b/week4/files/box_part1.20250506-162749.FCBak
new file mode 100644
index 0000000..3d3c6a6
Binary files /dev/null and b/week4/files/box_part1.20250506-162749.FCBak differ
diff --git a/week4/files/box_part1.FCStd b/week4/files/box_part1.FCStd
old mode 100755
new mode 100644
index 9b6d3f5..fb430d0
Binary files a/week4/files/box_part1.FCStd and b/week4/files/box_part1.FCStd differ