Created from to Customer Refund suitescript

Create a Transaction List/Record field.

Write a user event script.

Within beforeLoad :

  let customerRefundId1 = context.newRecord;

                  let credit = customerRefundId1.getValue({ fieldId: ‘entryformquerystring’ });

                  let credId = extractCredId(credit);

function extractCredId(inputString) {

        var credMatch = inputString.match(/cred=(d+)/);

        return credMatch ? credMatch[1] : null;

    }