Can not add function to pages-document created with Applescript

Question

If I create new document using the GUI (New document) I can place the cursor within any table-cell, type "=" (equal sign) and f.e. "2+2" which will result in a cell showing a "4".
If I create a document with Applescript, I can not add new functions (neither by typing = nor by using Insert >> Function (may be different, I have German version here). Already existing functions (which already were in the template) can still be used and work as expected but can not be altered.
Any idea?
I use Pages '08, Version 3.03
Code I used to create the document:
tell application "Pages"
launch
make new document at front with properties {template name:templateName}
# Angebotsnummer ins Dokument schreiben
tell body text of front document
make new paragraph at after paragraph 1 with data angebotsNr
set paragraph style of paragraph 2 to "Überschrift"
end tell
# Datei abspeichern
set dateiName to missing value
repeat until dateiName is not equal to missing value
set dateiName to text returned of (display dialog "Datei Name:" default answer angebotsNr & "_" & kundenName) as text
end repeat
save front document in angebotsOrdner & dateiName
end tell

Answer 1

I apologize but the given script can't run.
The variable templateName is undefined.
The variable angebotsNr is undefined too.
About the described behavior, it's a bug which I never discover before.
It's always striking in Pages '09.
Here is the report which I filed :
Bug ID# 8704270
Summary:
+Odd behavior of tables in Pages documents created by a script+
+Steps to Reproduce:+
+Run this huge script+
+tell application "Pages"+
+make new document at front with properties {template name:"Blank"} (* "Vierge" on French systems *)+
+end tell+
+Insert a table+
+try to insert a formula+
+Expected Results:+
+I assumed that I will get the formula editor which I get when the document is created by hand+
+Actual Results:+
+There is no way to get the editor, no way to insert the equal character.+
+This odd behavior strike in all versions of Pages '09 and Pages '08+
Regression:
+None to my knowledge+
Yvan KOENIG (VALLAURIS, France) dimanche 28 novembre 2010 11:30:29