How can I hide a filter in Odoo, I know I can use a record rule but in my case I can't.
This is not working.

***Please Note: This is not the filter I want to hide.***

```
<filter name="today" **invisible="1"** string="Today's Investigation" domain="[('date','&gt;=', datetime.datetime.combine(context_today(), datetime.time(0,0,0))), ('date','&lt;=', datetime.datetime.combine(context_today(), datetime.time(23,59,59)))]"/>

```