Problem with a 'case' statement

You can use an If statement instead of a Case statement.

If([Actual End Date]>[Est End Date],"<img src=\"https://images.quickbase.com/si/16/227-rect_red.png\"; title=\"Project Overdue\">",
ToDays([Total Days Overdue])>0,"<img src=\"https://images.quickbase.com/si/16/170-alarm_clock.png\"; title=\"Milestone Overdue\">",
[Project Status] = "Not Started", "<img src=\"https://images.quickbase.com/si/16/230-rect_blue.png\"; title=\"Not Started\">",
[Project Status] = "In Progress", "<img src=\"https://images.quickbase.com/si/16/229-rect_yellow.png\"; title=\"In Progress\">",
[Project Status] = "Completed", "<img src=\"https://images.quickbase.com/si/16/228-rect_green.png\"; title=\"Completed\">",
[Project Status] = "On Hold", "<img src=\"https://images.quickbase.com/si/16/231-rect_violet.png\"; title=\"On Hold\">",
[Project Status] = "Canceled", "<img src=\"https://images.quickbase.com/si/16/226-rect_gray.png\"; title=\"Canceled\">")