diff --git a/regress/expected/expr.out b/regress/expected/expr.out
index cc582cccc..8fc5da8e6 100644
--- a/regress/expected/expr.out
+++ b/regress/expected/expr.out
@@ -3077,6 +3077,22 @@ $$) AS (toBoolean agtype);
  false
 (1 row)
 
+SELECT * FROM cypher('expr', $$
+    RETURN toBoolean(1)
+$$) AS (toBoolean agtype);
+ toboolean 
+-----------
+ true
+(1 row)
+
+SELECT * FROM cypher('expr', $$
+    RETURN toBoolean(0)
+$$) AS (toBoolean agtype);
+ toboolean 
+-----------
+ false
+(1 row)
+
 -- should return null
 SELECT * FROM cypher('expr', $$
     RETURN toBoolean("false_")
@@ -3095,10 +3111,6 @@ $$) AS (toBoolean agtype);
 (1 row)
 
 -- should fail
-SELECT * FROM cypher('expr', $$
-    RETURN toBoolean(1)
-$$) AS (toBoolean agtype);
-ERROR:  toBoolean() unsupported argument agtype 3
 SELECT * FROM cypher('expr', $$
     RETURN toBoolean()
 $$) AS (toBoolean agtype);
@@ -3131,6 +3143,14 @@ $$) AS (toBooleanList agtype);
  [true, false, true]
 (1 row)
 
+SELECT * FROM cypher('expr', $$
+    RETURN toBooleanList([0,1,2,3,4])
+$$) AS (toBooleanList agtype);
+          tobooleanlist          
+---------------------------------
+ [false, true, true, true, true]
+(1 row)
+
 -- should return null
 SELECT * FROM cypher('expr', $$
     RETURN toBooleanList([])
@@ -3164,14 +3184,6 @@ $$) AS (toBooleanList agtype);
  [null, null]
 (1 row)
 
-SELECT * FROM cypher('expr', $$
-    RETURN toBooleanList([0,1,2,3,4])
-$$) AS (toBooleanList agtype);
-         tobooleanlist          
---------------------------------
- [null, null, null, null, null]
-(1 row)
-
 -- should fail
 SELECT * FROM cypher('expr', $$
     RETURN toBooleanList(fail)
diff --git a/regress/sql/expr.sql b/regress/sql/expr.sql
index d58027122..18714f79b 100644
--- a/regress/sql/expr.sql
+++ b/regress/sql/expr.sql
@@ -1349,6 +1349,12 @@ $$) AS (toBoolean agtype);
 SELECT * FROM cypher('expr', $$
     RETURN toBoolean("false")
 $$) AS (toBoolean agtype);
+SELECT * FROM cypher('expr', $$
+    RETURN toBoolean(1)
+$$) AS (toBoolean agtype);
+SELECT * FROM cypher('expr', $$
+    RETURN toBoolean(0)
+$$) AS (toBoolean agtype);
 -- should return null
 SELECT * FROM cypher('expr', $$
     RETURN toBoolean("false_")
@@ -1357,9 +1363,6 @@ SELECT * FROM cypher('expr', $$
     RETURN toBoolean(null)
 $$) AS (toBoolean agtype);
 -- should fail
-SELECT * FROM cypher('expr', $$
-    RETURN toBoolean(1)
-$$) AS (toBoolean agtype);
 SELECT * FROM cypher('expr', $$
     RETURN toBoolean()
 $$) AS (toBoolean agtype);
@@ -1377,6 +1380,10 @@ SELECT * FROM cypher('expr', $$
     RETURN toBooleanList(["True", "False", "True"])
 $$) AS (toBooleanList agtype);
 
+SELECT * FROM cypher('expr', $$
+    RETURN toBooleanList([0,1,2,3,4])
+$$) AS (toBooleanList agtype);
+
 -- should return null
 SELECT * FROM cypher('expr', $$
     RETURN toBooleanList([])
@@ -1394,10 +1401,6 @@ SELECT * FROM cypher('expr', $$
     RETURN toBooleanList([["A", "B"], ["C", "D"]])
 $$) AS (toBooleanList agtype);
 
-SELECT * FROM cypher('expr', $$
-    RETURN toBooleanList([0,1,2,3,4])
-$$) AS (toBooleanList agtype);
-
 -- should fail
 SELECT * FROM cypher('expr', $$
     RETURN toBooleanList(fail)
diff --git a/src/backend/utils/adt/agtype.c b/src/backend/utils/adt/agtype.c
index c02a37a90..cbcacdc78 100644
--- a/src/backend/utils/adt/agtype.c
+++ b/src/backend/utils/adt/agtype.c
@@ -5720,8 +5720,8 @@ Datum age_toboolean(PG_FUNCTION_ARGS)
         PG_RETURN_NULL();
 
     /*
-     * toBoolean() supports bool, text, cstring, or the agtype bool, and string
-     * input.
+     * toBoolean() supports bool, text, cstring, integer or the agtype bool,
+     * string and integer input.
      */
     arg = args[0];
     type = types[0];
@@ -5744,6 +5744,10 @@ Datum age_toboolean(PG_FUNCTION_ARGS)
             else
                 PG_RETURN_NULL();
         }
+        else if (type == INT2OID || type == INT4OID || type == INT8OID)
+        {
+            result = DatumGetBool(DirectFunctionCall1(int4_bool, arg));
+        }
         else
             ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                             errmsg("toBoolean() unsupported argument type %d",
@@ -5778,6 +5782,11 @@ Datum age_toboolean(PG_FUNCTION_ARGS)
             else
                 PG_RETURN_NULL();
         }
+        else if (agtv_value->type == AGTV_INTEGER)
+        {
+            result = DatumGetBool(DirectFunctionCall1(int4_bool,
+                                                      Int64GetDatum(agtv_value->val.int_value)));
+        }
         else
             ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                             errmsg("toBoolean() unsupported argument agtype %d",
@@ -5832,7 +5841,7 @@ Datum age_tobooleanlist(PG_FUNCTION_ARGS)
     /* iterate through the list */
     for (i = 0; i < count; i++)
     {
-        // TODO: check element's type, it's value, and convert it to boolean if possible.
+        // check element's type, it's value, and convert it to boolean if possible.
         elem = get_ith_agtype_value_from_container(&agt_arg->root, i);
         bool_elem.type = AGTV_BOOL;
 
@@ -5845,17 +5854,20 @@ Datum age_tobooleanlist(PG_FUNCTION_ARGS)
             if (pg_strcasecmp(string, "true") == 0)
             {
                 bool_elem.val.boolean = true;
-                agis_result.res = push_agtype_value(&agis_result.parse_state, WAGT_ELEM, &bool_elem);
+                agis_result.res = push_agtype_value(&agis_result.parse_state,
+                                                    WAGT_ELEM, &bool_elem);
             }
             else if (pg_strcasecmp(string, "false") == 0)
             {
                 bool_elem.val.boolean = false;
-                agis_result.res = push_agtype_value(&agis_result.parse_state, WAGT_ELEM, &bool_elem);
+                agis_result.res = push_agtype_value(&agis_result.parse_state,
+                                                    WAGT_ELEM, &bool_elem);
             }
             else
             {
                 bool_elem.type = AGTV_NULL;
-                agis_result.res = push_agtype_value(&agis_result.parse_state, WAGT_ELEM, &bool_elem);
+                agis_result.res = push_agtype_value(&agis_result.parse_state,
+                                                    WAGT_ELEM, &bool_elem);
             }
             
             break;
@@ -5863,14 +5875,25 @@ Datum age_tobooleanlist(PG_FUNCTION_ARGS)
         case AGTV_BOOL:
             
             bool_elem.val.boolean = elem->val.boolean;
-            agis_result.res = push_agtype_value(&agis_result.parse_state, WAGT_ELEM, &bool_elem);
+            agis_result.res = push_agtype_value(&agis_result.parse_state,
+                                                    WAGT_ELEM, &bool_elem);
+
+            break;
+
+        case AGTV_INTEGER:
+
+            bool_elem.val.boolean = DatumGetBool(DirectFunctionCall1(int4_bool,
+                                                                     Int64GetDatum(elem->val.int_value)));
+            agis_result.res = push_agtype_value(&agis_result.parse_state,
+                                                WAGT_ELEM, &bool_elem);
 
             break;
         
         default:
             
             bool_elem.type = AGTV_NULL;
-            agis_result.res = push_agtype_value(&agis_result.parse_state, WAGT_ELEM, &bool_elem);
+            agis_result.res = push_agtype_value(&agis_result.parse_state,
+                                                    WAGT_ELEM, &bool_elem);
             
             break;
         }