If you have a Sample with a UDF of the type Choice with the values 1-10 and want to search for all samples with a value less than 5, you would most likely build a search query that looks like this:
Samples: [Name of UDF] --> less than --> 5
And you would expect the result listing to only contain samples matching your query. But since a UDF of type Choice is not numerical, FreezerPro will ignore the entire query and instead list ALL samples, not making any selection what so ever. It will even list Samples not having the specified UDF at all.
This is very problematic since users will rely on searches when selecting samples for various reasons and any misleading result listings will have consequences down the line.
We suggest that the operators greater/less than are hidden when they are not applicable in an advanced search query and only is available when a suitable UDF or search value type is selected.