Solved
I have to edit particular node in the xml file node will be user input how can I do it???
suppose I have following xml
<edge>
<processing>
<threads_count>99</threads_count>
<queue_limit>1233</queue_limit>
</processing>
<gui>
<port>9901</port>
</gui>
<edge>
I can edit processing data like this xmlFile.*::processing but processing will be user input it can be either processing/ gui hw to use variable data in that code ???

