This figure shows the Rules Designer with a Ruleset that contains one IF/THEN rule. The advanced settings are visible: Advanced Mode is unchecked and Tree Mode is checked. The ROOT <fact type> shows the PO item. In the IF area, the left-hand-side <operand> is selected and the Value Options navigator shows PO/destination expanded and availabilityDate is selected. PO/destination.availabilityDate is shown in the text entry area, and the icon is over the Expression Builder icon, thus the Expression Builder rollover text is showing.