Business Rule Task attributes not being recognized

Flowable Engine
1

My IDE says I flowable:ruleVariableInput is not allowed.

ide_ref
ide_ref1503×921 150 KB

here is my xml.

<?xml version="1.0" encoding="UTF-8"?>
<definitions id="definitions"
             xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:xsd="http://www.w3.org/2001/XMLSchema"
             xmlns:flowable="http://flowable.org/bpmn"
             xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
             xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
             xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI"
             typeLanguage="http://www.w3.org/2001/XMLSchema"
             expressionLanguage="http://www.w3.org/1999/XPath"
             targetNamespace="http://www.flowable.org/processdef">

    <process id="qm_rules" name="qm_rules" isExecutable="true">
        <startEvent id="sid-6b0325a8-e8b6-4e3d-8fc6-f701c265640f" name="Start"/>
        <businessRuleTask id="sid-c53be198-33a5-4790-bd55-3c0485bd2f59"
                          name="ruleTask"
                          flowable:ruleVariablesInput="${qmInput}"
                          flowable:resultVariable="qmOutput"/>
        <sequenceFlow id="sid-ebdf530b-4dee-43dc-88b9-616d400e76da"
                      sourceRef="sid-6b0325a8-e8b6-4e3d-8fc6-f701c265640f"
                      targetRef="sid-c53be198-33a5-4790-bd55-3c0485bd2f59"/>
    </process>
    <bpmndi:BPMNDiagram id="BPMNDiagram_qm_rules">
        <bpmndi:BPMNPlane bpmnElement="qm_rules" id="BPMNPlane_qm_rules">
            <bpmndi:BPMNShape id="shape-5c0e6e7d-5b66-4420-aee9-26c0fc6828a5"
                              bpmnElement="sid-6b0325a8-e8b6-4e3d-8fc6-f701c265640f">
                <omgdc:Bounds x="-130.0" y="-80.0" width="30.0" height="30.0"/>
            </bpmndi:BPMNShape>
            <bpmndi:BPMNShape id="shape-92a8ced2-dab9-4af1-a5d6-72e89f47e5f7"
                              bpmnElement="sid-c53be198-33a5-4790-bd55-3c0485bd2f59">
                <omgdc:Bounds x="-25.0" y="-105.0" width="100.0" height="80.0"/>
            </bpmndi:BPMNShape>
            <bpmndi:BPMNEdge id="edge-7698ab50-1611-4cbc-8780-83a350cd74b4"
                             bpmnElement="sid-ebdf530b-4dee-43dc-88b9-616d400e76da">
                <omgdi:waypoint x="-100.0" y="-65.0"/>
                <omgdi:waypoint x="-25.0" y="-65.0"/>
            </bpmndi:BPMNEdge>
        </bpmndi:BPMNPlane>
    </bpmndi:BPMNDiagram>
</definitions>

Using IntelliJ 2023.1
plugin Flowable BPMN Visualizer

Cannot find flowable:ruleVariablesInput and flowable:rules attributes.

How can I use these attributes?