Problems calling a webhook

[davedeluxe]

Hi,
can someone help me? I'm trying to call a webhook on AWX Tower (Ansible) using the Add-On Builder.
This is my script but it doesn't work, but I don't get an error message either:

# encoding = utf-8
def process_event(helper, *args, **kwargs):
    """
    # IMPORTANT
    # Do not remove the anchor macro:start and macro:end lines.
    # These lines are used to generate sample code. If they are
    # removed, the sample code will not be updated when configurations
    # are updated.

    [sample_code_macro:start]

    # The following example gets the alert action parameters and prints them to the log
    machine = helper.get_param("machine")
    helper.log_info("machine={}".format(machine))


    # The following example adds two sample events ("hello", "world")
    # and writes them to Splunk
    # NOTE: Call helper.writeevents() only once after all events
    # have been added
    helper.addevent("hello", sourcetype="sample_sourcetype")
    helper.addevent("world", sourcetype="sample_sourcetype")
    helper.writeevents(index="summary", host="localhost", source="localhost")

    # The following example gets the events that trigger the alert
    events = helper.get_events()
    for event in events:
        helper.log_info("event={}".format(event))

    # helper.settings is a dict that includes environment configuration
    # Example usage: helper.settings["server_uri"]
    helper.log_info("server_uri={}".format(helper.settings["server_uri"]))
    [sample_code_macro:end]
    """

    helper.log_info("Alert action awx_webhooks started.")

    # TODO: Implement your alert action logic here
    
    import requests

    url = 'https://<AWX-URL>/api/v2/job_templates/272/gitlab/'
    headers = {'Authorization': 'X-Gitlab-Token: <MYTOKEN>'}
    
    response = requests.post(url, headers=headers, verify=False)
    
    print(response.status_code)
    print(response.text)