How to get the previous value of the field in Business rule?

[Dinesh Kumar5]

We want to update the value of the current field  depends on the value of the previous field .

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

var v = new GlideRecord('u_meeting_booking_details');
var prev1= previous.getvalue("u_string_1");            // unable to get the value using this syntax
gs.addInfoMessage(prev1);
var prev2= previous.getvalue("u_room_status");     // unable to get the value using this syntax
gs.addInfoMessage(prev2);
v.query();

while(v.next())
{

if(current.u_add_room == "volga"){

if(prev1 == "yes")
{
current.setValue("u_string_1","no");
current.setValue("u_room_status","yes");
}

else
{
current.setValue("u_string_1","yes");
current.setValue("u_room_status","no");

}

}
current.update();

}
})(current, previous);

[Mark Roethof]

Hi there,

If just interested in a previous value, just use something like:

previous.getValue("u_string_1")

There's no need to use "getElement".

Note: previous does not work on async business rules.

If my answer helped you in any way, please then mark it as helpful.

Kind regards,
Mark

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[Dinesh Kumar5]

 Mark, we tried with that syntax also but its not working.

[Ankur Bawiskar]

Hi Dinesh,

try using below updated code

I have just used previous.u_string_1 and previous.u_room_status

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

var v = new GlideRecord('u_meeting_booking_details');
var prev1 = previous.u_string_1;           
gs.addInfoMessage(prev1);
var prev2 = previous.u_room_status;
gs.addInfoMessage(prev2);
v.query();

while(v.next())
{

if(current.u_add_room == "volga"){

if(prev1 == "yes")
{
current.setValue("u_string_1","no");
current.setValue("u_room_status","yes");
}

else
{
current.setValue("u_string_1","yes");
current.setValue("u_room_status","no");

}

}
current.update();

}
})(current, previous);

Mark ✅ Correct if this solves your issue and also mark 👍 Helpful if you find my response worthy based on the impact.
Thanks
Ankur

[Dinesh Kumar5]

Ankur, Its still not working. Infomessage still does not diplays the previous value. It is still empty.