Set contents of text box of another script

OK, so I have this script which, if the rules are met, will open a script, which has a dialog box with a text box inside it. How do I tell it to set the contents of that text box to something… I tried

run script ("Myscript.scpt" as alias)
	set contents of front window to some_text

but that doesn’t work :frowning:

Model: MacBook Pro
AppleScript: 2.21
Browser: Google Chrome 5.0.307.9
Operating System: Mac OS X (10.6)

Calling script

set scriptPath to load script file "pathtoscript"
scriptPath's displayDialog("Hi There")

Called script

on displayDialog(theText)
	display dialog theText default answer theText
end displayDialog

That has to do with how myScript is written.
myScript has to return the text entered by the user
This is an example of how myScript might be written. Note that the user pressing Cancel is handeled by the script rather than by letting AppleScript just end.

-- possible myScript
try
	return text returned of (display dialog "Enter something" default answer "")
on error
	return "canceled"
end try

That script could be called by a routine that looks something like

set returnedText to run script ("Macintosh HD:Users:merickson:Desktop:myScript.scpt" as alias)

if returnedText ≠ "canceled" then
	set text of document 1 of application "TextEdit" to returnedText
end if

I’ve got script 1. Script 1 launches script 2 which displays a dialog box with a text box in it. I want Script 1 to type something in that text box.

That is exactly what my example demonstrates.

Sorry, I got a bit muddled up…