Renaming by script expression - why does it process the job multiple times?

[reprokaiser]

Dear All,



I'm trying to rename files using an outside counter for renaming files in PowerSwitch. There is a small XML file on drive c:, which stores the actual slot number:



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0





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.. and each of the incoming files get the slot number from here, then the counter increased and saved for later use. Here is the script expression which I enter to a basic "Rename" element's property pane:



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var theName = job.getNameProper();

var theNewName, thePosition;

var theXmlDoc = new Document( "C:/Counter.xml" );

thePosition = theXmlDoc.evalToNumber("/Info/Counter"); // retrieving the original position

thePosition ++;

theNewName = thePosition;

job.log( 1, theNewName );

var theNode = theXmlDoc.evalToNode( "/Info/Counter" );

var theTextElement = theXmlDoc.createText( thePosition.toString() );

theNode.replaceChild( theTextElement, theNode.getFirstChild() );

theXmlDoc.save( "C:/Counter.xml" ); // saving the increased counter



theNewName;



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The problem is, that the counting up is going by 2, not by 1! From the log I see that every time a job hits the Rename element, the script's running twice, therefore the resulting files are numbered like 2, 4, 6, 8 etc.



Why is it happening this way? Is it a bug or a feature? How can I run the script expression only once?



Any help appreciated.



Kind regards,



Peter

Budapest