One way is to write a java step in an activity. Inside this iterate through the pagelist and save it to the required data structure, in his case List object.

You can write below javastep in activity

ClipboardPage ParseList = tools.getStepPage();

ClipboardProperty ResultsList = ParseList.getProperty("pxResults");

ClipboardProperty resultsPage;

// to do a for each, need to get an iterator

java.util.Iterator itr = ResultsList.iterator();

List<String> list = new ArrayList<String>();

int count =0;

while (itr.hasNext()) {

               resultsPage = (ClipboardProperty) itr.next();

  //add String values to the list 

 list.add(resultsPage.getProperty("PropertyName").getStringValue());

   //oLog.infoForced(resultsPage.getProperty("FirstName").getStringValue());

    //count++;

}

Where StePage (For Example Test)is of type  “Code-Pega-List” and also create page called Test. pxResults  .

Hope it's clear .

Thanks,

Arun