[ODOO11] Hi. I have an editable tree view inside my form view (see picture: https://ibb.co/gsCVKK)

I can edit the values inside the tree but everytime I hit the Save button at top, it doesn't save the update values inside my tree. It goes back to default (in this case 0). My assumption is, the "Save" button is for the form view alone. It's not the save button for the tree view which is why values are not updating.
Below is my code for my form view:

        <record model="ir.ui.view" id="score_card_form_view">
            <field name="name">Score Card</field>
            <field name="model">golf_online_ph.score_card</field>
            <field name="arch" type="xml">
                <form>
                    <sheet>
                        <group string="Score Card">
                            <field name="round_id" />
                            <field name="player_id" />
                            <field name="round_holes">
                                <tree editable="top" >
                                    <field name="hole_number" readonly="1"/>
                                    <field name="score_value"/>
                                </tree>
                            </field>
                        </group>
                    </sheet>
                </form>
            </field>
        </record>