Code is like this - some event subscription in mxml and event handler in script tag.
<fx:Script>
function dataChangedHandler(event):void {
...
}
</fx:Script>
<comps:Comp dataChanged="dataChangedHandler(event)"
p.s. Now I tried to enclose method in braces: dataChanged="{dataChangedHandler(event)}" and all errors are disappeared. Even after I removed braces again.
