The default operator is = (equal), which indicates that the Keyword Value of the document must match the value entered in the field. The selection of operators available from the drop-down list varies for the Keyword Type selected. Select the Keyword Type first, to ensure that only the correct operators for the Keyword's data type are represented in the operator drop-down list.
Note:
The Equal operator can be used with all Keyword data types except for Currency. With the Equal operator type configured, the rule will always evaluate to true for Keywords with Currency data types.