public String getOutputDataItemExpression() {
if(this.outputDataItemExpression==null){
MultiInstanceLoopCharacteristics multiInstanceLoopCharacteristics=(MultiInstanceLoopCharacteristics)loopCharacteristics;
DataOutput dataOutput =multiInstanceLoopCharacteristics.getOutputDataItem();
Expression expression=getExtensionExpression(dataOutput);
if(expression!=null){
this.outputDataItemExpression=expression.getValue();
}
}
return outputDataItemExpression;