hello , Thank you SDMITCH for help

cordially Benj

Hello , Today I wanted Creat script for window sills

my approach is create face manuel
click for select

run script
( part 1 : select face , creat color , Push -30 mm
Part 2 : select vertical face for push +30)

Part 1 work , but Part 2 fail

But Ruby = SyntaxError help me please for resolve the problem
thank you in advance , Benjamin

#part 1
model = Sketchup.active_model
ent = model.entities
sel = model.selection
ad = sel.ent

faces = []

sel.each do |e|
faces <<e if e.is_a? Sketchup::Face
end

faces.each do |appui|

appuicolor = Sketchup::Color.new(238,130,238)
appui.material = appuicolor
appui.back_material = appuicolor

status = appui.pushpull(-30.mm , true)

end
#part 2

ad.each do |e|

s=Sketchup.active_model.selection;
a=s.to_a;s.clear;
a.grep(Sketchup::Face).each{|f|s.add(f)if f.normal.z==0}

faces.each do |facade|

status = facade.pushpull(30.mm )

end