Business Rule is updating previous value on task table

[Priya Singh 2 2]

Hi Team my requirement is that I have to create one catalog item and on that catalog item I don't need to show all variables on portal but I am showing all variables on request and some of the variables on task, now requestor wants to update task variable value on task description.

I have written before update BR - 

(function executeRule(current, previous /*null when async*/ ) {

 // Add your code here

var keys = new Array();

var set = new GlideappVariablePoolQuestionSet();

set.setRequestID(current.request_item);

set.load();

var vs = set.getFlatQuestions();

var description = '';

for (var i = 0; i < vs.size(); i++) {

if (vs.get(i).getLabel() != '' && vs.get(i).getDisplayValue() != '' && vs.get(i).getDisplayValue() != 'false') {

description = description + vs.get(i).getLabel() + " : " + vs.get(i).getDisplayValue() + "\n";

        }

    }

    current.description = description;

Issue is that it's updating previous value not the value which I change currently.

For ex - I changed Priority to high on task variable it will not do anything

But next time I changed it to critical then on task description it will be showing as high 

Please advise, thanks in advance

})(current, previous);

[Mark Manders]

What is nog working? The entire BR, or do you still get the previous values?