diff --git a/dotscape b/dotscape
index b876354..4cd8321 100755
Binary files a/dotscape and b/dotscape differ
diff --git a/fcore/graph-lines.sml b/fcore/graph-lines.sml
index e6e180e..366a3b7 100644
--- a/fcore/graph-lines.sml
+++ b/fcore/graph-lines.sml
@@ -18,9 +18,9 @@ struct
         val minusX = (curX - halfWidth - 1.0) / halfWidth
         val plusX = (curX - halfWidth + 1.0) / halfWidth
 
-        val minY = Vector.sub (xClickPoints, 0)
+        val minY = Vector.sub (yClickPoints, 0)
         val minY = (~(minY - halfHeight)) / halfHeight
-        val maxY = Vector.sub (xClickPoints, Vector.length xClickPoints - 1)
+        val maxY = Vector.sub (yClickPoints, Vector.length yClickPoints - 1)
         val maxY = (~(maxY - halfHeight)) / halfHeight
 
         val acc = Ndc.ltrbToVertex (minusX, maxY, plusX, minY) :: acc