Custom 2D symbol of a Chair

[momodestro]

Dear all,

After importing a Chair from sketchup, I opened the object. I canceled the 2d script, open 2D symbol and draw with polyline the new 2d Symbol. I add a Fill (background - White) catching the contour with the magic wand. In the 2D symbol looks good. I saved.

When I go on the floorplan the fill is black and not white and it's shape is very choppy, not as refined as in the 2D symbol windows.

See the picture below, in the 2D symbol windows and in the floorplan.

Where did I do wrong?

Thanks!

Operating system used: Windows