'
' Reply from Peter ... known MMBasic problem
' The workaround is to copy the array value into a temporary variable and test that
'
 FOR mC% = 1 to 2*WIDTH%+1
   wt$ = MID$(m$(mR%), mC%, 1)
   SELECT CASE wt$
      CASE "@"
         COLOUR RGB(RED)
      CASE "X"
         COLOUR RGB(GREEN)
      CASE "#"
         COLOUR RGB(BROWN)
      CASE ELSE
         COLOUR RGB(WHITE)
   END SELECT
   PRINT wt$;