diff --git a/src/ytdl_sub/script/parser.py b/src/ytdl_sub/script/parser.py
index 7711ae9a..82b66bd9 100644
--- a/src/ytdl_sub/script/parser.py
+++ b/src/ytdl_sub/script/parser.py
@@ -117,7 +117,7 @@ def _is_null(string: Optional[str]) -> bool:
 
 
 def _is_breakable(char: str) -> bool:
-    return char in ["}", ",", ")", "]"] or char.isspace()
+    return char in ["}", ",", ")", "]", ":"] or char.isspace()
 
 
 def _is_boolean_true(string: Optional[str]) -> bool:
diff --git a/tests/unit/script/functions/test_array_functions.py b/tests/unit/script/functions/test_array_functions.py
index a85e38ce..7ad81b5d 100644
--- a/tests/unit/script/functions/test_array_functions.py
+++ b/tests/unit/script/functions/test_array_functions.py
@@ -1,6 +1,8 @@
+import pytest
 from unit.script.conftest import single_variable_output
 
 from ytdl_sub.script.script import Script
+from ytdl_sub.script.utils.exceptions import FunctionRuntimeException
 
 
 class TestArrayFunctions:
@@ -70,3 +72,27 @@ class TestArrayFunctions:
             .native
         )
         assert output == [[0, "a"], [1, "b"], [2, "c"]]
+
+    def test_cast_array(self):
+        output = (
+            Script(
+                {
+                    "map_test": "{ {'key': [1, 2, 3]} }",
+                    "output": "{ %array( %map_get(map_test, 'key') )}",
+                }
+            )
+            .resolve(update=True)
+            .get("output")
+            .native
+        )
+        assert output == [1, 2, 3]
+
+    def test_array_size(self):
+        output = single_variable_output("{%array_size([1, 2, 3])}")
+        assert output == 3
+
+    def test_cast_array_errors_cannot_cast(self):
+        with pytest.raises(
+            FunctionRuntimeException, match="Tried and failed to cast Integer as an Array"
+        ):
+            single_variable_output("{%array(1)}")
diff --git a/tests/unit/script/functions/test_map_functions.py b/tests/unit/script/functions/test_map_functions.py
index 174824b3..709445e6 100644
--- a/tests/unit/script/functions/test_map_functions.py
+++ b/tests/unit/script/functions/test_map_functions.py
@@ -1,9 +1,12 @@
 import re
 
 import pytest
+from unit.script.conftest import single_variable_output
 
 from ytdl_sub.script.script import Script
+from ytdl_sub.script.utils.exceptions import FunctionRuntimeException
 from ytdl_sub.script.utils.exceptions import KeyDoesNotExistRuntimeException
+from ytdl_sub.script.utils.exceptions import KeyNotHashableRuntimeException
 
 
 class TestMapFunctions:
@@ -47,6 +50,19 @@ class TestMapFunctions:
                 }
             ).resolve()
 
+    def test_map_get_errors_key_not_hashable(self):
+        with pytest.raises(
+            KeyNotHashableRuntimeException,
+            match=re.escape("Tried to use Array as a Map key, but it is not hashable."),
+        ):
+            Script(
+                {
+                    "non_hashable_key": "{%array([1, 2, ['nest']])}",
+                    "input_map": "{{'key': 'value'}}",
+                    "output": "{ %map_get( input_map, %array_at(non_hashable_key, 2)) }",
+                }
+            ).resolve()
+
     @pytest.mark.parametrize(
         "contains_value, expected_value",
         [
@@ -98,3 +114,27 @@ class TestMapFunctions:
             .native
         )
         assert output == [[0, "KEY1", "value1"], [1, "KEY2", "value2"]]
+
+    def test_map_size(self):
+        output = single_variable_output("{%map_size({'key': 'value', 1: 3})}")
+        assert output == 2
+
+    def test_cast_map(self):
+        output = (
+            Script(
+                {
+                    "array_test": "{ [1, 2, {'key': 'value'}] }",
+                    "output": "{ %map( %array_at(array_test, 2) )}",
+                }
+            )
+            .resolve(update=True)
+            .get("output")
+            .native
+        )
+        assert output == {"key": "value"}
+
+    def test_cast_map_errors_cannot_cast(self):
+        with pytest.raises(
+            FunctionRuntimeException, match="Tried and failed to cast Integer as a Map"
+        ):
+            single_variable_output("{%map(1)}")