diff --git a/category_number_one/service-tasks/service_tasks.bpmn b/category_number_one/service-tasks/service_tasks.bpmn
index d45e2a31..40317518 100644
--- a/category_number_one/service-tasks/service_tasks.bpmn
+++ b/category_number_one/service-tasks/service_tasks.bpmn
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="Definitions_96f6665" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="3.0.0-dev">
+<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" xmlns:spiffworkflow="http://spiffworkflow.org/bpmn/schema/1.0/core" id="Definitions_96f6665" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="3.0.0-dev">
   <bpmn:process id="Process_bd2e724" isExecutable="true">
     <bpmn:startEvent id="StartEvent_1">
       <bpmn:outgoing>Flow_0ydmy9a</bpmn:outgoing>
@@ -10,17 +10,26 @@
     </bpmn:endEvent>
     <bpmn:sequenceFlow id="Flow_09h0mla" sourceRef="service_task_one" targetRef="Event_0fy5yvl" />
     <bpmn:serviceTask id="service_task_one" name="Service Task One">
-      <bpmn:incoming>Flow_0ydmy9a</bpmn:incoming>
-      <bpmn:outgoing>Flow_09h0mla</bpmn:outgoing>
       <bpmn:extensionElements>
-        <spiffworkflow:serviceTaskOperator id="SlackWebhookOperator">
+        <spiffworkflow:serviceTaskOperator id="SlackWebhookHook">
           <spiffworkflow:parameters>
-            <spiffworkflow:parameter name="webhook_token" type="string" value="[FIXME]" />
-            <spiffworkflow:parameter name="message" type="string" value="ServiceTask testing" />
-            <spiffworkflow:parameter name="channel" type="string" value="#" />
+            <spiffworkflow:parameter id="args" type="any" />
+            <spiffworkflow:parameter id="attachments" type="any" />
+            <spiffworkflow:parameter id="blocks" type="any" />
+            <spiffworkflow:parameter id="channel" type="any" />
+            <spiffworkflow:parameter id="http_conn_id" type="any" />
+            <spiffworkflow:parameter id="icon_emoji" type="any" />
+            <spiffworkflow:parameter id="icon_url" type="any" />
+            <spiffworkflow:parameter id="link_names" type="any" />
+            <spiffworkflow:parameter id="message" type="any" value="from spiff" />
+            <spiffworkflow:parameter id="proxy" type="any" />
+            <spiffworkflow:parameter id="username" type="any" />
+            <spiffworkflow:parameter id="webhook_token" type="any" value="https://hooks.slack.com/services/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" />
           </spiffworkflow:parameters>
         </spiffworkflow:serviceTaskOperator>
       </bpmn:extensionElements>
+      <bpmn:incoming>Flow_0ydmy9a</bpmn:incoming>
+      <bpmn:outgoing>Flow_09h0mla</bpmn:outgoing>
     </bpmn:serviceTask>
   </bpmn:process>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">