Hi oxygold, Tried this but the propetypage is not presented at all now! This does seem strange as I have already used umlType:Model to enable the selection of a menu item in the same plugin.xml - see extract below.
<extension point="org.eclipse.ui.popupMenus">
<objectContribution objectClass="com.ibm.xtools.uml.navigator.ModelSer verElement"
id="MyID">
<menu
label="%plugin_popup_extractor"
path="additions"
id="MyMenu.menu">
<separator
name="group1">
</separator>
</menu>
<action
label="%plugin_popup_generate"
class="MyClassName"
menubarPath="MyMenu.menu/group1"
enablesFor="1"
id="MyActions.newAction">
<enablement>
<objectState
name="umlType"
value="Model">
</objectState>
</enablement>
</action>
</objectContribution>
</extension>
<extension
point="org.eclipse.ui.propertyPages">
<page
class="MyPropertyPage"
id="MyPropertyPage"
name="%plugin_properties_name"
objectClass="com.ibm.xtools.uml.navigator.ModelSer verElement">
<filter
name="umlType"
value="Model">
</filter>
</page>
</extension>