diff --git a/index.js b/index.js
index 1a88f6c..030ca52 100644
--- a/index.js
+++ b/index.js
@@ -235,6 +235,19 @@ function calculateBaseBillAmount(detailSplitted, customKeywords, productKeyval,
 }
 
 /**
+ * get bill count using number of occurence of spliter
+ * @date 2020-10-02
+ * @param {Object} detailSplitted
+ * @param {string} customKeyword
+ * @returns {number}
+ */
+function getBillCountUsingCounter(detailSplitted, customKeyword) {
+    if (!detailSplitted) return 0;
+
+    return ((customKeyword && detailSplitted[customKeyword]) || '').split(',').length;
+}
+
+/**
  * get bill count from splitted detail
  * @date 2020-10-02
  * @param {Object} detailSplitted
@@ -264,3 +277,4 @@ exports.getDetailFromMessage = getDetailFromMessage;
 exports.splitPostpaidDetail = splitPostpaidDetail;
 exports.calculateBaseBillAmount = calculateBaseBillAmount;
 exports.getBillCount = getBillCount;
+exports.getBillCountUsingCounter = getBillCountUsingCounter;
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