Hi,
i have a problem
when i write this code:

Create the WebDialog and set its HTML file

face_dialog = UI::WebDialog.new
path = Sketchup.find_support_file "Ch13/create_face.html", "Plugins"
face_dialog.set_file path

Set the WebDialog's callback

face_dialog.add_action_callback("create_face") {|d, arg|
if arg.to_s.length == 0
puts "Invalid input. Coordinates must be valid numbers."
else
v = arg.to_s.split(",")
pt1 = Geom::Point3d.new(Float(v[0].strip), Float(v[1].strip),
Float(v[2].strip))
pt2 = Geom::Point3d.new(Float(v[3].strip), Float(v[4].strip),
Float(v[5].strip))
pt3 = Geom::Point3d.new(Float(v[6].strip), Float(v[7].strip),
Float(v[8].strip))
pt4 = Geom::Point3d.new(Float(v[9].strip), Float(v[10].strip),
Float(v[11].strip))
vec1 = pt2 - pt1
vec2 = pt2 - pt3
plane = [pt1, vec1 * vec2]
if pt4.on_plane? plane
Sketchup.active_model.entities.add_face pt1, pt2, pt3, pt4
else
puts "Invalid input. Points must lie on the same plane."
end
end
}

Display the dialog box

if RUBY_PLATFORM.index "darwin"
face_dialog.show_modal
else
face_dialog.show
end

the unit appare in inches but mi template in setting in mm.How i can have it in mm?
thanks and sorry for my english