Initializer for property 'states' is not allowed here

The cause of this error is in this code:

<s:Application xmlns:gta="com.domain.effects.states.*">
	<fx:Declarations>
		<handlers:EventHandler>
			<gta:ToggleStates states="{['something']}">
		</handlers:EventHandler>
	</fx:Declarations>
</s:Application>

When the ToggleStates MXML instance has property “states” the error is generated. When the property is renamed to “myStates” the error goes away.