diff --git a/src/zcl_excel_worksheet.clas.abap b/src/zcl_excel_worksheet.clas.abap
index a4a2376..cc6e396 100644
--- a/src/zcl_excel_worksheet.clas.abap
+++ b/src/zcl_excel_worksheet.clas.abap
@@ -3967,7 +3967,7 @@ CLASS zcl_excel_worksheet IMPLEMENTATION.
             ENDIF.
 
           WHEN cl_abap_typedescr=>typekind_char OR cl_abap_typedescr=>typekind_string OR cl_abap_typedescr=>typekind_num OR
-               cl_abap_typedescr=>typekind_hex.
+               cl_abap_typedescr=>typekind_hex or cl_abap_typedescr=>typekind_xstring.
             lv_value = <fs_value>.
             lv_data_type = 's'.