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Gert Pellin
d347a0efca
The After Effects stagger idiom id = thisProperty.propertyGroup(2).propertyIndex; failed with "not a callable function": the expression object model had no propertyGroup() and property groups had no propertyIndex. - Property.propertyGroup(countUp = 1) and PropertyGroup.propertyGroup() return the group countUp levels up; from a top-level group they reach the layer. A count below 1, not a number, or above the layer is an error naming propertyGroup, never a crash. - PropertyGroup.propertyIndex: the group's 1-based index among its siblings (Child requests now carry it). - One new host request (Ancestor) walks up from the node's full uid path, so it also works for the property being evaluated. - Tests for the stagger expression, effect parameters, reaching the layer, other layers' properties and groups and out-of-range counts; the fuzzer seeds and tokens include the new members.