TruClient 12.02: transactionDuration returns negative value

Hi,

I am using TruClient 12.02.

I am having a problem with TC.transactionDuration().

What I do is this:

in "evaluate Javascript":

  var overallTransaction = "BUC02_Main";

  TC.setParam("pOverallTransaction", overallTransaction); // store transaction name in paramter pOverallTransaction

  TC.startTransaction(overallTransaction);

then some other steps... (takes a few seconds)

then I do this in an "evaluate Javascript":

window.alert("pOverallTransaction: " + TC.getParam("pOverallTransaction") + "\n" + "transactionDuration: " +TC.transactionDuration(TC.getParam("pOverallTransaction")) );

This returns an alert window with this info:

pOverallTransaction: BUC02_Main
transactionDuration: -16972

I would expect a (small) positive value for the transactionDuration and not a negative value.

Interestingly enough... when I save, close and reopen Vugen and run the script again, the result of the TC.transactionDuration() is now a positive number (like: 19.342)

When I run the script again, it returns that negative value. Mind you, i didn't finish the script (meaning: I did not run TC.endTransaction())

Any idea what is going on?

Raymond