delayed update:
                <Dim type="Height">
                    <OperatorDim op="Multiply">
                        <FontDim type="LineSpacing" padding="8" />
                        <AbsoluteDim value="1.5"/>
                    </OperatorDim>
                </Dim>

normal update:
                <Dim type="Height">
                        <FontDim type="LineSpacing" padding="8" />
                </Dim>