Fixed issues with handling null values.

Packs/FiltersAndTransformers/ReleaseNotes/1_2_19.md

@@ -0,0 +1,13 @@
+
+#### Scripts
+
+##### LastArrayElement
+- Updated the Docker image to: *demisto/python3:3.10.11.61265*.
+
+- Fixed the way in which the script handled null value given to the argument parameters, instead of returning 'None', it will return a meaningful error message. 
+
+##### FirstArrayElement
+- Updated the Docker image to: *demisto/python3:3.10.11.61265*.
+
+- Fixed the way in which the script handled null value given to the argument parameters, instead of returning 'None', it will return a meaningful error message.
+

Packs/FiltersAndTransformers/Scripts/FirstArrayElement/FirstArrayElement.py

@@ -6,6 +6,8 @@ def main():
 
     if isinstance(value, list) and value:
         value = value[0]
+    elif value is None:
+        value = []
 
     demisto.results(value)
 

Packs/FiltersAndTransformers/Scripts/FirstArrayElement/FirstArrayElement.yml

@@ -19,7 +19,7 @@ args:
   isArray: true
 scripttarget: 0
 runonce: false
-dockerimage: demisto/python3:3.9.8.24399
+dockerimage: demisto/python3:3.10.11.61265
 runas: DBotWeakRole
 tests:
 - No test - unit test

Packs/FiltersAndTransformers/Scripts/FirstArrayElement/FirstArrayElement_test.py

@@ -33,3 +33,13 @@ def test_main(mocker):
     results = demisto.results.call_args[0][0]
     assert isinstance(results, list)
     assert results[2] == 3
+
+    mocker.patch.object(demisto, 'args', return_value={
+        'value': None
+    })
+    mocker.patch.object(demisto, 'results')
+    main()
+    assert demisto.results.call_count == 1
+    results = demisto.results.call_args[0][0]
+    assert isinstance(results, list)
+    assert results == []

Packs/FiltersAndTransformers/Scripts/FirstArrayElement/README.md

@@ -1,6 +1,7 @@
 Returns the first element of an array.  If the value passed is not an array, it returns the original value that was passed.
 
 ## Script Data
+
 ---
 
 | **Name** | **Description** |
@@ -10,12 +11,14 @@ Returns the first element of an array.  If the value passed is not an array, it
 | Cortex XSOAR Version | 5.0.0 |
 
 ## Inputs
+
 ---
 
 | **Argument Name** | **Description** |
 | --- | --- |
 | value | An array for which to return the first element. |
 
 ## Outputs
+
 ---
 There are no outputs for this script.

Packs/FiltersAndTransformers/Scripts/LastArrayElement/LastArrayElement.py

@@ -6,6 +6,8 @@ def main():
 
     if type(value) is list and len(value) > 0:
         value = value[-1]
+    elif value is None:
+        value = []
 
     demisto.results(value)
 

Packs/FiltersAndTransformers/Scripts/LastArrayElement/LastArrayElement.yml

@@ -19,7 +19,7 @@ args:
   isArray: true
 scripttarget: 0
 runonce: false
-dockerimage: demisto/python3:3.9.8.24399
+dockerimage: demisto/python3:3.10.11.61265
 runas: DBotWeakRole
 tests:
 - No test - unit test

Packs/FiltersAndTransformers/Scripts/LastArrayElement/LastArrayElement_test.py

@@ -33,3 +33,13 @@ def test_main(mocker):
     results = demisto.results.call_args[0][0]
     assert isinstance(results, list)
     assert results[2] == 3
+
+    mocker.patch.object(demisto, 'args', return_value={
+        'value': None
+    })
+    mocker.patch.object(demisto, 'results')
+    main()
+    assert demisto.results.call_count == 1
+    results = demisto.results.call_args[0][0]
+    assert isinstance(results, list)
+    assert results == []

Packs/FiltersAndTransformers/Scripts/LastArrayElement/README.md

@@ -0,0 +1,24 @@
+Returns the last element of an array. If the value passed is not an array, it returns the original value that was passed.
+
+## Script Data
+
+---
+
+| **Name** | **Description** |
+| --- | --- |
+| Script Type | python3 |
+| Tags | general, transformer, entirelist |
+| Cortex XSOAR Version | 5.0.0 |
+
+## Inputs
+
+---
+
+| **Argument Name** | **Description** |
+| --- | --- |
+| value | An array for which to return the last value. |
+
+## Outputs
+
+---
+There are no outputs for this script.

Packs/FiltersAndTransformers/pack_metadata.json

@@ -2,7 +2,7 @@
     "name": "Filters And Transformers",
     "description": "Frequently used filters and transformers pack.",
     "support": "xsoar",
-    "currentVersion": "1.2.18",
+    "currentVersion": "1.2.19",
     "author": "Cortex XSOAR",
     "url": "https://www.paloaltonetworks.com/cortex",
     "email": "",