12.7. Creating References to VariablesYou can't make a reference to a local variable. Well, you can, but if you try to use it you'll get a mysterious error. For example: local x set x to {1, 2, 3} set y to a reference to x get item 1 of y -- error: Can't make item 1 of x into type reference But a reference can itself be stored in a local variable: local y set x to {1, 2, 3} set y to a reference to x get item 1 of y -- 1 You can make a reference to anything that isn't a local, such as a global or a top-level entity: script myScript property x : 5 set y to a reference to x set contents of y to y + 1 display dialog x end script run myScript -- 6 That works just as well from outside of the script object: script myScript property x : 5 display dialog x end script tell myScript set y to a reference to its x set contents of y to y + 1 run -- 6 end tell |