The CICS CM plug-in has an implicit wildcard, which is added to the end of all search values. The wildcard is not visible.
For example, when searching using the toolbar or using the Search dialog if you type KAT as a value, it is read as KAT*; the wildcard is denoted by the *. In this way, the search is for all resources beginning with KAT.
If you need an explicit wildcard, you can add it anywhere in the search definition. However, the implicit wildcard at the end of the search value remains: