Text Mask Filter Date: how can I filter (or sortby) on month?

[nier3]

Hi,

I would like some info about Text Mask Filter: Date (dd/mm/yyyy).

For example I add 30/11/2014, how can I filter (or sortby) on month? For example all threads with november (11)?

I tried with <a href="{$forumurl}&amp;filtertf_{VALUE$2}=11">November</a> but no effect

I would like to know if is possible filter (or sortby) on month {VALUE$​​2}

Thank you in advance!