diff --git a/src/entry/Maat_api.cpp b/src/entry/Maat_api.cpp
index e0e1e97..34cfb95 100644
--- a/src/entry/Maat_api.cpp
+++ b/src/entry/Maat_api.cpp
@@ -423,17 +423,25 @@ struct _OUTER_scan_status_t* _make_outer_status(_Maat_feather_t *feather, int th
 	outer_mid=ALLOC(struct _OUTER_scan_status_t, 1);
 	outer_mid->feather=feather;
 	outer_mid->district_id=DISTRICT_ANY;
-	outer_mid->thread_num=(unsigned short)thread_num;
-	alignment_int64_array_add(feather->outer_mid_cnt, thread_num, 1);
+	outer_mid->thread_num=(signed short)thread_num;
 	return outer_mid;
 }
-struct _OUTER_scan_status_t* grab_mid(scan_status_t* raw_mid,_Maat_feather_t* feather, int thread_num, int is_hit_region)
+struct _OUTER_scan_status_t* grab_mid(scan_status_t* raw_mid, _Maat_feather_t* feather, int thread_num, int is_hit_region)
 {
 	struct _OUTER_scan_status_t* _mid=(struct _OUTER_scan_status_t*)(*raw_mid);;
 	if(_mid==NULL)
 	{
 		_mid=_make_outer_status(feather, thread_num);
 		*raw_mid=_mid;
+		if(_mid->thread_num>=0)//Maat_set_scan_status calls grap_mid() with thread_num=-1.
+		{
+			alignment_int64_array_add(feather->outer_mid_cnt, thread_num, 1);
+		}
+	}
+	if(_mid->thread_num<0 && thread_num>0)
+	{
+		_mid->thread_num=thread_num;		
+		alignment_int64_array_add(feather->outer_mid_cnt, thread_num, 1);
 	}
 
 	if(is_hit_region==1)
@@ -2481,12 +2489,7 @@ int Maat_set_scan_status(Maat_feather_t feather,scan_status_t* mid,enum MAAT_SCA
 	{
 		return 0;
 	}
-	_mid=grab_mid(mid, _feather, 0, 0);
-	if(_mid==NULL)
-	{
-		_mid=_make_outer_status(_feather,0);
-		*mid=_mid;
-	}
+	_mid=grab_mid(mid, _feather, -1, 0);
 	switch(type)
 	{
 		case	MAAT_SET_SCAN_DISTRICT:
@@ -2599,7 +2602,10 @@ void Maat_clean_status(scan_status_t* mid)
 		return;
 	}
 	_mid=(struct _OUTER_scan_status_t*)(*mid);
-	alignment_int64_array_add(_mid->feather->outer_mid_cnt, _mid->thread_num, -1);
+	if(_mid->thread_num>=0)
+	{
+		alignment_int64_array_add(_mid->feather->outer_mid_cnt, _mid->thread_num, -1);
+	}
 	if(_mid->compile_mid!=NULL)
 	{
 		Maat_hierarchy_compile_mid_free(_mid->compile_mid);
diff --git a/src/entry/Maat_rule.cpp b/src/entry/Maat_rule.cpp
index 3dc42c0..4bf7053 100644
--- a/src/entry/Maat_rule.cpp
+++ b/src/entry/Maat_rule.cpp
@@ -57,7 +57,7 @@ extern "C"
 }
 #endif
 
-int MAAT_FRAME_VERSION_3_5_0_20211020=1;
+int MAAT_FRAME_VERSION_3_5_1_20211024=1;
 
 int is_valid_table_name(const char* str)
 {
diff --git a/src/entry/Maat_table_runtime.cpp b/src/entry/Maat_table_runtime.cpp
index 0ae1867..01efa10 100644
--- a/src/entry/Maat_table_runtime.cpp
+++ b/src/entry/Maat_table_runtime.cpp
@@ -351,10 +351,12 @@ void Maat_table_runtime_plugin_new_row(struct Maat_table_runtime* table_rt, stru
 		if(atoi(row+is_valid_offset)==1)
 		{
 			EX_data_rt_row2EX_data(plugin_rt->ex_data_rt, row, row+key_offset, key_len, NULL, logger);
+			table_rt->origin_rule_num++;
 		}
 		else
 		{
 			EX_data_rt_delete_by_row(plugin_rt->ex_data_rt, row, row+key_offset, key_len, logger);
+			table_rt->origin_rule_num--;
 		}
 	}
 	if(plugin_schema->cb_plug_cnt>0)
@@ -448,10 +450,12 @@ void Maat_table_runtime_fqdn_plugin_new_row(struct Maat_table_runtime* table_rt,
 		{
 			fqdn_rule=fqdn_rule_new((unsigned int)atoi(row+row_id_offset), row+fqdn_offset, fqdn_len, atoi(row+is_suffix_flag_offset));
 			EX_data_rt_row2EX_data(fqdn_plugin_rt->ex_data_rt, row, row+row_id_offset, row_id_len, fqdn_rule, logger);
+			table_rt->origin_rule_num++;
 		}
 		else
 		{
 			EX_data_rt_delete_by_row(fqdn_plugin_rt->ex_data_rt, row, row+row_id_offset, row_id_len, logger);
+			table_rt->origin_rule_num--;
 		}
 	}
 	else
@@ -683,11 +687,13 @@ void Maat_table_runtime_ip_plugin_new_row(struct Maat_table_runtime* table_rt, s
 		{
 			
 			EX_data_rt_row2EX_data(ip_plugin_rt->ex_data_rt, row, row+row_id_offset, row_id_len, ip_rule, logger);
+			table_rt->origin_rule_num++;
 		}
 		else
 		{
 		
 			EX_data_rt_delete_by_row(ip_plugin_rt->ex_data_rt, row, row+row_id_offset, row_id_len, logger);
+			table_rt->origin_rule_num--;
 			free(ip_rule);
 		}
 	}
diff --git a/src/inc_internal/Maat_rule_internal.h b/src/inc_internal/Maat_rule_internal.h
index a8689e6..8153bd1 100644
--- a/src/inc_internal/Maat_rule_internal.h
+++ b/src/inc_internal/Maat_rule_internal.h
@@ -167,7 +167,7 @@ struct Maat_region_inner
 struct _OUTER_scan_status_t
 {
 	struct _Maat_feather_t* feather;
-	unsigned short thread_num;
+	signed short thread_num;
 	unsigned char is_set_district;
 	unsigned char is_last_scan;
 	int district_id; //-1: Any District; -2: Unkonwn District;