The Business Rules Editor has two modes: simple editor and advanced editorr. The simple editor is a UI which lets you define one or more conditions to be checked. You can determine if you want the rule to match all the conditions or any of them, and you must always compare a variable or business parameter to a constant.
The advanced editor allows you to enter PBL code and can therefore be used to implement more complex conditions.
A web version of the Business Rules Editor can also be used from the Oracle BPM WorkSpace web application. To have access to the editor, a participant must have a role where a global activity has been defined with an Edit Business Rules implementation type.
This activity will be visible in the Applications panel of the WorkSpace page.