Can you replace with in Indesign (xml)?

Hey guys,

when you tag an element in Indesign, you get 
 for linebreaks. I need this to be 


I tried the following:

for(i = 0; i < myDocument.selection.length; i++){

    current = myDocument.selection;

    currentText[i] = current[i].contents;

    currentText[i].replace('&#xD','&#xA');

}

Any suggestions? Thanks in advance!