diff --git a/core/my_basic.h b/core/my_basic.h
index 9f5c209..fda10c1 100755
--- a/core/my_basic.h
+++ b/core/my_basic.h
@@ -385,6 +385,7 @@ MBAPI int mb_init_array(struct mb_interpreter_t* s, void** l, mb_data_e t, int*
 MBAPI int mb_get_array_len(struct mb_interpreter_t* s, void** l, void* a, int r, int* i);
 MBAPI int mb_get_array_elem(struct mb_interpreter_t* s, void** l, void* a, int* d, int c, mb_value_t* val);
 MBAPI int mb_set_array_elem(struct mb_interpreter_t* s, void** l, void* a, int* d, int c, mb_value_t val);
+MBAPI int mb_init_coll(struct mb_interpreter_t* s, void** l, mb_value_t* coll);
 MBAPI int mb_get_coll(struct mb_interpreter_t* s, void** l, mb_value_t coll, mb_value_t idx, mb_value_t* val);
 MBAPI int mb_set_coll(struct mb_interpreter_t* s, void** l, mb_value_t coll, mb_value_t idx, mb_value_t val);
 MBAPI int mb_remove_coll(struct mb_interpreter_t* s, void** l, mb_value_t coll, mb_value_t idx);