syntaxErrors4.scxml

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<?xml version="1.0" ?>

<scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0">

    <state id="wrapper" initial="on">

        <state id="on">

            <state id="negated2">

    <state id="operand2">

            </state>

        </state>

        <transition event="OP.INSERT">

            <if cond="_event.data.operator == 'OPER.PLUS'">

                <assign location="long_expr" expr="long_expr+'+'" />

            <elsDif cond="_event.data.operator=='OPER.MINUS'" />

                <assign location="long_expr" expr="long_expr+'-'" />

            </if>

        </transition>

    </state>

</scxml>