In OS X 10.5 or 10.6, Spaces
assignments can be accessed and changed via the scriptable interface to System Events.app
:
tell application "System Events"
set x to application bindings of spaces preferences of expose preferences
set x to {|com.apple.textedit|:4} & x -- Have TextEdit appear in space 4
set application bindings of spaces preferences of expose preferences to x
end tell
If you don’t already know it, you can get the bundle id of an application from the Finder:
tell application "Finder"
get id of application file "TextEdit" of folder "Applications" of startup disk
end tell