data logging for image in survey

I have to program a picture-rating-experiment (Inquisit 3.0.6).

Therefore I use radiobuttons (for rating) in surveypage with image (for the picture) as survey-question. Pictures are presented randomly, therefore I have to know the current picturename. How can I log the picture-name in experiment. <data> / columns=[item.itemname.item] </data> will not work :-(

*********************

<item bild>
/ 1="b1.jpg"
/ 2="b2.jpg"
/ 3="b3.jpg"
</item>

<image stim>
/ items =bild
</image>

<radiobuttons radio>
/ options=("","","","","","","","","")
/ optionvalues = ("1","2","3","4","5","6","7","8","9")
/ orientation=horizontal
</radiobuttons>

<surveypage spage>
/ questions = [1=stim;2=radio]
</surveypage>
<block test>
/ trials = [1-3=spage]
</block>

<expt>
/ blocks = [1=test]
</expt>

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Best

Guido