fix: fixed the logic
diff --git a/erpnext/stock/report/stock_ageing/stock_ageing.py b/erpnext/stock/report/stock_ageing/stock_ageing.py
index d5d2bc3..63cad52 100644
--- a/erpnext/stock/report/stock_ageing/stock_ageing.py
+++ b/erpnext/stock/report/stock_ageing/stock_ageing.py
@@ -62,13 +62,13 @@
 		age = date_diff(to_date, item[1])
 		
 		if age <= filters.range1:
-			range1 = item[0]
+			range1 += item[0]
 		elif age <= filters.range2:
-			range2 = item[0]
+			range2 += item[0]
 		elif age <= filters.range3:
-			range3 = item[0]
+			range3 += item[0]
 		else:
-			above_range3 = item[0]
+			above_range3 += item[0]
 		
 	return range1, range2, range3, above_range3
 
@@ -290,7 +290,7 @@
 		"{range1}-{range2}".format(range1=cint(filters["range1"])+ 1, range2=filters["range2"]),
 		"{range2}-{range3}".format(range2=cint(filters["range2"])+ 1, range3=filters["range3"]),
 		"{range3}-{above}".format(range3=cint(filters["range3"])+ 1, above=_("Above"))]):
-			add_column(range_columns, label="Age in ("+ label +")", fieldname='range' + str(i+1))
+			add_column(range_columns, label="Age ("+ label +")", fieldname='range' + str(i+1))
 
 def add_column(range_columns, label, fieldname, fieldtype='Float', width=140):
 	range_columns.append(dict(