searchfield min condition is not working

My searchield condition syntax doesn't work:

In the catalog-template I use a searchfield with a "max" condition to find all the records from an INTEGRER column, but it's not working:

{joodb searchfield|AltitudeMin|max}

When I press search it still finds the default "LIKE" values and not "lower than" values.

In the database table I have about 850 records with trees that are able to grow within a minimum altitude (AltitudeMin) and maximum (AltitudeMax) altitude. When I make a searchfield for altitude I want to find all the records that are between AltitudeMin and AltitudeMax, but it's not working yet.

The search field condition is not working. The SeedViability column has an int field type. I use the following code and when I put an numeric value on my website in the search box I still get only the records that contain equal input value excluding all those higher values.

{joodb searchfield|SeedViability|min}

For integral values this is very important to have the min and max conditions working, so I hope for a response.

I tested it. The min and max option work as expected and described.

Especially for integer values.
If SeedViability is integer and you enter 9 in a field
{searchfield SeedViability|min}
only entries with SeedViability 9 or lower are displayed!