diff --git a/m770/f99.dir b/m770/f99.dir
index c20c4d483..4c393885e 100755
--- a/m770/f99.dir
+++ b/m770/f99.dir
@@ -1,3 +1,3 @@
 99
 1
-m770/righef1|0|0|53|4|Righe F1 del modello 770|||
+m770/righef1|0|0|108|4|Righe F1 del modello 770 (27/05/97)|||
diff --git a/m770/f99.trr b/m770/f99.trr
index 688086443..e2261b9bc 100755
--- a/m770/f99.trr
+++ b/m770/f99.trr
@@ -1,11 +1,13 @@
 99
-7
-CODDITTA|3|5|0|
-TIPOPRO|7|1|0|
-NPROG|2|2|0|
-CODCAUS|9|2|0|
-ALIQUOTA|4|6|2|
-SOGRIT|4|18|0|
-ROPE|4|18|0|
+9
+CODDITTA|3|5|0|Ditta
+NPROG|2|2|0|Numero riga
+TIPOA|1|1|0|Tipo persona
+CODANAGR|3|5|0|Codice anagrafica persone
+CODCAUS|9|2|0|Codice causale
+DENCAUS|1|50|0|Causale
+ALIQUOTA|4|6|2|Aliquota
+SOGRIT|4|18|0|Somme soggette a ritenuta
+ROPE|4|18|0|Ritenute operate
 1
-CODDITTA+TIPOPRO+NPROG| 
+CODDITTA+NPROG|