PSDExportPrefs options fails to work in CS5

Question

Hi,
The following piece of code works fine in CS4 when I change the resolution and colormodel to differnct values, but fails in CS5.
The structure in both versions seems identical. Any idea as to why it fails in this latest version?
PSDExportPrefs sExportPrefs;
memset( &sExportPrefs, 0, sizeof(PSDExportPrefs) );
sExportPrefs.mResolution = 300;  //dpi
sExportPrefs.mColorModel = (PSDPluginColorMode) kPSDDefaultColorModelPref;
//file name
result = sAIActionManager->AIActionSetString( valueParameterBlock, 'name', szFullFileName );
//file format
result = sAIActionManager->AIActionSetString( valueParameterBlock, 'frmt', "Photoshop PSD Export" );
//file extension
result = sAIActionManager->AIActionSetString( valueParameterBlock, 'extn', "psd, pdd" );
//sExportPrefs
result = sAIActionManager->AIActionSetRawDataBytes( valueParameterBlock, 'parm',  (ASUInt32) sizeof(sExportPrefs), (const char*) &sExportPrefs );
result = sAIActionManager->PlayActionEvent( kAIExportDocumentAction, kDialogOff, valueParameterBlock );
Thanks for your help.
Abdo

Answer 1

It looks like I am at the deadend.
The reason I wanted to show the option dialog was to be able to change the resolution and the color mode, which I was trying to do it all along via PSDExportPrefs setting - which is working fine in CS4 but not in CS5.
Now, if I am out of luck to show the option dialog as you suggested, I am stuck with the default doc setting values and it a problem.
I did it for the PDF-based CopyAsAction and  I expected the Export version also has the same capability.  Here the PDF version I used at the time:
sAIActionManager->AIActionSetInteger( valueParameterBlock, kAISaveDocumentAsGetParamsKey, true );
sAIActionManager->PlayActionEvent( kAISaveDocumentACopyAsAction, kDialogOff, valueParameterBlock);
and this will show the PDF option dialog and let the user set their options.
Is there any other thing I can do to change these values in CS5?
Thanks for your help, Patterson you really helpfull and I really appreciate that.
Abdo