In this example, the field contains a string value, two groups, and a global list. At run time, the list is expanded and groups are not filtered out.
<ALLOWEDVALUES expanditems="true" >
<LISTITEM value = "string" />
<LISTITEM value = "Example1\juser2"/>
<LISTITEM value = "Example1\MyTeam" />
<GLOBALLIST value = "BoolValues" />
</ALLOWEDVALUES>
The drop-down list box for the field shows these values: string, true, false, juser, juser2, devuser, testuser, pmuser, Development, Test, and Program Management.