diff --git a/rainbowvalue.h b/rainbowvalue.h
index 088057e..2773264 100644
--- a/rainbowvalue.h
+++ b/rainbowvalue.h
@@ -3,7 +3,7 @@
 #define rainbowvalue
 #define MAX_PW_LEN 64
     struct s_rainbowvalue256 {
-    char * pw;
+    char  pw[MAX_PW_LEN];
     uint8_t hash[32]; // 32 * 8bit = 256 bit
 };
 
diff --git a/readBulk.c b/readBulk.c
index 76d94fe..e36a056 100644
--- a/readBulk.c
+++ b/readBulk.c
@@ -14,4 +14,7 @@ size_t getHashBulk(FILE *fptr, struct s_rainbowvalue256 rs[BULKSIZE]){
 }
 size_t writeHashHumanReadable(FILE *fptr, struct s_rainbowvalue256 rs[BULKSIZE]){
     return 0;
+}
+size_t writeHashBase64(FILE *fptr,size_t num ,struct s_rainbowvalue256 rs[BULKSIZE]){
+
 }
\ No newline at end of file
diff --git a/readBulk.h b/readBulk.h
index 88e0339..90fb2ac 100644
--- a/readBulk.h
+++ b/readBulk.h
@@ -37,6 +37,6 @@ size_t writeHashHumanReadable(FILE *fptr, struct s_rainbowvalue256 rs[BULKSIZE])
  * @param rs
  * @return
  */
-size_t writeHashBase64(FILE *fptr, struct s_rainbowvalue256 rs[BULKSIZE]);
+size_t writeHashBase64(FILE *fptr,size_t num, struct s_rainbowvalue256 rs[BULKSIZE]);
 
 #endif
\ No newline at end of file