MM/YY date format within validator.xml

[Celinio Fernandes]

hi,

inside validator.xml,
is it possible to use the MM/YY format with the date validator ?

The documentation gives examples with MM/dd/yyyy
http://struts.apache.org/userGuide/dev_validator.html

but not with MM/YY.
I tried this:
<field property="ExpirationDate" depends="required, date">
<arg0 key="ExpirationDate.label.date" />
<var><var-name>datePatternStrict</var-name><var-value>MM/yy</var-value></var>
</field>

Validation is not working.
Any idea please ?
Thanks