This worked previously, but suddenly stopped. i can't figure out why

it is the exact same script that we use on two other fields. but for some reason it won't work on this field

What it does is grab the total money owed for a certain product type and puts the total in a certain field in the quote.

2. qrecs = zoho.crm.getRecordById("Quotes",qid.toLong());
3. //info qrecs ;
4. pds = ifnull(qrecs.getJSON("Product_Details"),List());
5. mrp = ifnull(qrecs.getJSON("Monthly_Recurring_Price"),1);
6. tot = 0;
7. for each  pd in pds
8. {
9. pid = ifnull(ifnull(pd.getJSON("product"),Map()).getJSON("id"),"");
10. if(pid.toString().len() > 0)
11. {
12. prec = zoho.crm.getRecordById("Products",pid.toLong());
13. //info prec ;
14. if(ifnull(prec.getJSON("Product_type"),"") == "Monthly Recurring")
15. {
16. tot = tot + ifnull(pd.getJSON("net_total"),0);
17. info tot;
18. }
19. }
20. }
21. //if(tot == mrp || tot == 1)
22. //{
23. mp = Map();
24. mp.put("Monthly_Recurring_Price",tot);
25. qupr = zoho.crm.updateRecord("Quotes",qid.toLong(),mp);
26. info mp;
27. info qupr;
    

The above code works perfectly