This plugin, designed for SOBI2, allows you to search into entries with 2 new advanced search methods:

 01/ from -> to : allow the user to search all entries with custom field value between 2 values (like all houses from 2 to 4 rooms)
 02/ min/max: allow the user to search all entries with custom field value at least a value (like all houses with at least 2 rooms)

Work with inputbox, list box, check list group, and calendar.