Hiding post based on two criteria.

I am trying to hide posts based on the following criteria:

If the date is in the past, and if the "hide post after event" checkbox has been turned on.

I have successfully managed to filter the unwanted evens in my template using:

<perch:if id="dato" value="{current_date_and_time}" match="lte">
<perch:if id="hide_post" value="false" match="neq">
    This post should be hidden
</perch:if>
</perch:if>

However, I want to do the opposite. I have tried changing "lte" to "gte" and match "neq" to "eq", but it does not work. is there a perch unless-tag?