use ref in PROCESSOR_SELECT_SYNCHRO

field.h

@@ -625,7 +625,7 @@ public:
 	int32 change_position(uint16 step, group* targets, effect* reason_effect, uint8 reason_player, uint32 enable);
 	int32 operation_replace(uint16 step, effect* replace_effect, group* targets, card* target, int32 is_destroy);
 	int32 activate_effect(uint16 step, effect* peffect);
-	int32 select_synchro_material(int16 step, uint8 playerid, card* pcard, int32 min, int32 max, card* smat, group* mg);
+	int32 select_synchro_material(int16 step, uint8 playerid, card* pcard, int32 min, int32 max, card* smat, group* mg, int32 filter1, int32 filter2);
 	int32 select_xyz_material(int16 step, uint8 playerid, uint32 lv, card* pcard, int32 min, int32 max);
 	int32 select_release_cards(int16 step, uint8 playerid, uint8 cancelable, int32 min, int32 max);
 	int32 select_tribute_cards(int16 step, card* target, uint8 playerid, uint8 cancelable, int32 min, int32 max, uint8 toplayer, uint32 zone);

operations.cpp

@@ -5287,7 +5287,7 @@ int32 field::activate_effect(uint16 step, effect* peffect) {
 	}
 	return TRUE;
 }
-int32 field::select_synchro_material(int16 step, uint8 playerid, card* pcard, int32 min, int32 max, card* smat, group* mg) {
+int32 field::select_synchro_material(int16 step, uint8 playerid, card* pcard, int32 min, int32 max, card* smat, group* mg, int32 filter1, int32 filter2) {
 	switch(step) {
 	case 0: {
 		core.select_cards.clear();

processor.cpp

@@ -609,10 +609,10 @@ uint32 field::process() {
 	}
 	case PROCESSOR_SELECT_SYNCHRO: {
 		int32 ret = TRUE;
-		if(!(it->arg1 >> 16))
-			ret = select_synchro_material(it->step, it->arg1 & 0xffff, (card*)it->ptr1, it->arg2 & 0xffff, it->arg2 >> 16, nullptr, (group*)it->ptr2);
+		if (!(it->arg1 >> 16))
+			ret = select_synchro_material(it->step, it->arg1 & 0xffff, (card*)it->ptr1, it->arg2 & 0xffff, it->arg2 >> 16, nullptr, (group*)it->ptr2, it->arg3, it->arg4);
 		else
-			ret = select_synchro_material(it->step, it->arg1 & 0xffff, (card*)it->ptr1, it->arg2 & 0xffff, it->arg2 >> 16, (card*)it->ptr2, nullptr);
+			ret = select_synchro_material(it->step, it->arg1 & 0xffff, (card*)it->ptr1, it->arg2 & 0xffff, it->arg2 >> 16, (card*)it->ptr2, nullptr, it->arg3, it->arg4);
 		if(ret)
 			core.units.pop_front();
 		else