Put template:

<VegBIEN>

    <_setDefault id="-1">

            <_simplifyPath>

                <next>parent_id</next>

                <path>

                    <location>

                        <locationevent>

                                <taxonoccurrence>

                                    <aggregateoccurrence>

                                        <count>$stemCount</count>

                                        <plantobservation>

                                                <authorstemcode>$stemCode</authorstemcode>

                                                <diameterbreastheight_m><_cm_to_m><value>$stemDiameter</value></_cm_to_m></diameterbreastheight_m>

                                                <height_m>$stemHeight</height_m>

                                                <sourceaccessioncode>$STEMLOCATION_ID</sourceaccessioncode>

                                                <xposition_m>$stemXPosition</xposition_m>

                                                <yposition_m>$stemYPosition</yposition_m>

                                            </stemobservation>

                                        </plantobservation>

                                        <sourceaccessioncode>$STEMCOUNT_ID</sourceaccessioncode>

                                    </aggregateoccurrence>

                                </taxonoccurrence>

                            </locationevent>

                    </location>

                </path>

            </_simplifyPath>

        </path>

    </_setDefault>

</VegBIEN>