autoscroll speed

CustomSettings.xml
<control type="group" id="504">
                    <control type="button" id="505">
                    <label>Lente(8s)</label>
                    <width>200</width>
                    <onright>506</onright>
                    <onleft>502</onleft>
                    <onclick>Skin.SetString(vitesse,"lente")</onclick>
                    <enable>!StringCompare(Skin.String(vitesse),"lente")</enable>
                    </control>
                    <control type="button" id="506">
                    <label>Moyenne(5s)</label>
                    <width>200</width>
                    <left>200</left>
                    <onright>507</onright>
                    <onleft>505</onleft>
                    <onclick>Skin.SetString(vitesse,"moyenne")</onclick>
                    <enable>!StringCompare(Skin.String(vitesse),"moyenne")</enable>
                    </control>
                    <control type="button" id="507">
                    <label>Rapide(3s)</label>
                    <width>200</width>
                    <left>400</left>
                    <onright>505</onright>
                    <onleft>506</onleft>
                    <onclick>Skin.SetString(vitesse,"rapide")</onclick>
                    <enable>!StringCompare(Skin.String(vitesse),"rapide")</enable>
                    </control>
                </control>

includes.xml
    <include name="autoscrolllente"><autoscroll time="8000">true</autoscroll></include>
    <include name="autoscrollmoyenne"><autoscroll time="5000">true</autoscroll></include>
    <include name="autoscrollrapide"><autoscroll time="3000">true</autoscroll></include>

Home.xml
    <control type="list" id="56">
      <description>My first list container</description>
    <posx>40</posx>
      <posy>100</posy>
      <width>1200</width>
      <height>550</height>
      <visible>true</visible>
    <include condition="StringCompare(Skin.String(vitesse),lente)">autoscrolllente</include>
    <include condition="StringCompare(Skin.String(vitesse),moyenne)">autoscrollmoyenne</include>
    <include condition="StringCompare(Skin.String(vitesse),rapide)">autoscrollrapide</include>
...