Opening Modal Dialog on Custom Action

<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
  <CustomAction
                Description="Create Dialog With Scenario"
                Sequence="10001"
                GroupId="SiteActions"
                Id="DialogSiteCustomAction"
                Location="Microsoft.SharePoint.StandardMenu"
                ImageUrl="/_layouts/Images/Asteros.KPZSZF/Megafon.jpg"
                Rights="AddListItems" Title="Create Dialog">
  <UrlAction Url="javascript:OpenPopUpPageWithTitle('/_layouts/CustomSPCF/customspcf.aspx', RefreshOnDialogClose, 640, 610,'Create Dialog')"/>
</CustomAction>
</Elements>