diff --git a/ZA2X/CLAS/ZCL_EXCEL_GRAPH.slnk b/ZA2X/CLAS/ZCL_EXCEL_GRAPH.slnk
index 1c4e8be..2fb0c11 100644
--- a/ZA2X/CLAS/ZCL_EXCEL_GRAPH.slnk
+++ b/ZA2X/CLAS/ZCL_EXCEL_GRAPH.slnk
@@ -654,7 +654,7 @@ endmethod.</source>
     SHIFT lv_start_row_c LEFT DELETING LEADING space.
     ls_serie-ref = ip_sheet.
     ls_serie-ref = zcl_excel_common=&gt;escape_string( ip_value = ls_serie-ref ).
-    CONCATENATE ls_serie-ref &apos;!$&apos; ip_lbl_from_col &apos;$&apos; lv_start_row_c &apos;:$&apos; ip_lbl_to_col &apos;$&apos; lv_stop_row_c INTO ls_serie-ref.
+    CONCATENATE ls_serie-ref &apos;!$&apos; ip_ref_from_col &apos;$&apos; lv_start_row_c &apos;:$&apos; ip_ref_to_col &apos;$&apos; lv_stop_row_c INTO ls_serie-ref.
     CLEAR: lv_start_row_c, lv_stop_row_c.
   ELSE.
     ls_serie-ref = ip_ref.