diff --git a/src/zcl_excel_columns.clas.abap b/src/zcl_excel_columns.clas.abap
index 826f0c2..29b8648 100644
--- a/src/zcl_excel_columns.clas.abap
+++ b/src/zcl_excel_columns.clas.abap
@@ -57,8 +57,9 @@ CLASS ZCL_EXCEL_COLUMNS IMPLEMENTATION.
     LS_HASHED_COLUMN-COLUMN_INDEX = IO_COLUMN->GET_COLUMN_INDEX( ).
     LS_HASHED_COLUMN-COLUMN = IO_COLUMN.
 
-    modify table COLUMNS_HASEHD from LS_HASHED_COLUMN .
-    COLUMNS->ADD( IO_COLUMN ).
+    insert LS_HASHED_COLUMN into table COLUMNS_HASEHD .
+
+	COLUMNS->ADD( IO_COLUMN ).
   endmethod.
 
 
diff --git a/src/zcl_excel_rows.clas.abap b/src/zcl_excel_rows.clas.abap
index 4199a41..7ce0244 100644
--- a/src/zcl_excel_rows.clas.abap
+++ b/src/zcl_excel_rows.clas.abap
@@ -63,7 +63,7 @@ CLASS ZCL_EXCEL_ROWS IMPLEMENTATION.
     LS_HASHED_ROW-ROW_INDEX = IO_ROW->GET_ROW_INDEX( ).
     LS_HASHED_ROW-ROW = IO_ROW.
 
-    modify table ROWS_HASEHD from LS_HASHED_ROW .
+    insert LS_HASHED_ROW into table ROWS_HASEHD.
 
     ROWS->ADD( IO_ROW ).
   endmethod.                    "ADD