Make masterpage items in indesign....

Question

How can I get my automatic design on the master page?
set Vbreedte to (text returned of (display dialog "width?" default answer "")) as string
set Vhoogte to (text returned of (display dialog "Height?" default answer "")) as string
set Vbleed to (text returned of (display dialog "bleed? document?" default answer "3")) as string
tell application "Adobe InDesign CS4"
set the user interaction level of script preferences to never interact
tell view preferences
set horizontal measurement units to millimeters
set vertical measurement units to millimeters
end tell
--make new document
set myDocument to make document with properties {document preferences:{page width:Vbreedte, page height:Vhoogte}}
tell myDocument
-- document preferences adjusted
tell document preferences to set facing pages to false
set zero point to {0, 0}
set properties of guide preferences to {guides shown:false}
tell layout window 1
zoom given fit page
end tell
set ruler origin of view preferences to page origin
--make spot-color
set myColor to make color with properties {name:"spot", color value:{100, 0, 100, 0}, model:spot}
--maak background layer + ill-box
set myLayer1 to make layer with properties {name:"background"}
set myFrame1 to make rectangle
set geometric bounds of myFrame1 to {"-6", "-6", Vhoogte + 6, Vbreedte + 6}
set stroke weight of myFrame1 to 0
set fill color of myFrame1 to "None"
set stroke color of myFrame1 to "None"
tell application "Adobe InDesign CS4" to activate
end tell

Answer 1

Budgie, Thanks for the sugestion. I've tried it like it was discribed but no result.
The tutorial refers to Masterspreads, but I do not work with Spreads but with pages. I can not find the exact syntax to refer or go to the masterpage.
--my script--
set Vbreedte to (text returned of (display dialog "width?" default answer "")) as string
set Vhoogte to (text returned of (display dialog "Height?" default answer "")) as string
--set Vbleed to (text returned of (display dialog "bleed document?" default answer "3")) as string
tell application "Adobe InDesign CS4"
set the user interaction level of script preferences to never interact
--make new document
set myDocument to make document with properties {document preferences:{page width:Vbreedte, page height:Vhoogte}}
tell view preferences
set horizontal measurement units to millimeters
set vertical measurement units to millimeters
tell myDocument
--Get a reference to the first master spread.
set myMasterSpread to master spread 1 of myDocument
--Get a reference to the margin preferences of the first page in the master spread.
tell margin preferences of page 1 of myMasterSpread
end tell
end tell
tell myDocument
-- document preferences adjusted
tell document preferences to set facing pages to false
set zero point to {0, 0}
set properties of guide preferences to {guides shown:false}
tell layout window 1
zoom given fit page
end tell
set ruler origin of view preferences to page origin
--make spot-color
set myColor to make color with properties {name:"spot", color value:{100, 0, 100, 0}, model:spot}
--make background layer + ill-box
set myLayer1 to make layer with properties {name:"background"}
set myFrame1 to make rectangle
set geometric bounds of myFrame1 to {"-6", "-6", Vhoogte + 6, Vbreedte + 6}
set stroke weight of myFrame1 to 0
set fill color of myFrame1 to "None"
set stroke color of myFrame1 to "None"
tell application "Adobe InDesign CS4" to activate
end tell
end tell
end tell
--end script--