Error calling MSWord function from a Powerbuilder application

A Word document is stored in a Oracle database as blob.
It is retrieved during run time into a Blob variable and then assigned to a OLE control (OLE_1.Objectdata = Blob variable).
Then we declare a local variable of type "oleobject" and is initiated by OLE_1.object ( ole_object_variable = ole_1.object)
Now onwards we use the local "oleobject" variable to execute MSword methods(functions) like
ole_object_variable.mailmerge.opendatasource(...).
MS Excel spread sheet is used as data source.
We are NOT using "create" and "ConnectToObject" functions.
This setup was working fine with older versions of MSWord & MS Excel.
 
Opendatasource function description ...
 Ole_object.MailMerge.OpenDataSource(Name As String, [Format], [ConfirmConversions], [ReadOnly], [LinkToSource], [AddToRecentFiles], [PasswordDocument], [PasswordTemplate], [Revert], [WritePasswordDocument], [WritePasswordTemplate], [Connection], [SQLStatement], [SQLStatement1], [OpenExclusive], [SubType*])
Our current code...

iole_mergeto.MailMerge.OpenDataSource("c:\_junk.xls",la_zero,la_false,true,la_false,la_false,
la_nulstring,la_nulstring,la_false,la_nulstring,la_nulstring,"Entire Spreadsheet",la_nulstring,la_nulstring)

As per MS web site, to make this function work (in word2002) as before we need to pass a new parameter "SubType". They have given the value to be passed for that. But when I do, I get run time error "Illegal parameter passed..." .

Sometime it just says "Error calling External function..."

We are using PB 6.5, Win XP and Office XP.

I highly appreciate your any suggestions which helps me solve this critical, long standing issue.

Thanks,

Meena_kumariAsked:
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bruintjeCommented:
you used the long value for the subtype parameter? since i see a nullstring and not the value of the parameter in your connect string

if you record a macro connecting manually and compare the recorded string to the one you use can you make it work from there or not?
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Meena_kumariAuthor Commented:
What I have shown was my current code , not the modified code. Currently we are not passing
[OpenExclusive], [SubType*] . [OpenExclusive] was there earlier but optional. And [SubType] is
the new argument for Word 2002. We were not passing value for [OpenExclusive] so far.
 
In the modified code I am passing boolean value for [OpenExclusive] and a string value for [SubType*])
 
Value passed for SubType is "wdMergeSubTypeWord2000"
 
I did not understand your Macro part. Can you please explain it once more.
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bruintjeCommented:
wdMergeSubTypeWord2000

has a value of long in word 2003 and the value passed is 8

so if you try to pass 8 instead of the string value what happens?
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