fix

molecularnodes/blender/bpyd/object.py

@@ -224,6 +224,9 @@ def named_attribute(self, name: str, evaluate: bool = False) -> np.ndarray:
         """
         return attr.named_attribute(self.object, name=name, evaluate=evaluate)
 
+    def set_boolean(self, array: np.ndarray, name: str) -> None:
+        self.store_named_attribute(array, name=name, atype=AttributeTypes.BOOLEAN)
+
     def evaluate(self):
         obj = self.object
         obj.update_tag()

molecularnodes/entities/trajectory/trajectory.py

@@ -77,7 +77,7 @@ def add_selection_from_atomgroup(self, atomgroup: mda.AtomGroup, name: str = "")
 
     def apply_selection(self, selection: Selection):
         "Set the boolean attribute for this selection on the mesh of the object"
-        self.set_boolean(name=selection.name, boolean=selection.to_mask())
+        self.set_boolean(selection.to_mask(), name=selection.name)
 
     @property
     def subframes(self):