Can't delete selected feature

Question

I can update and add to my featurelayer, but when I try to delete I get FaultCode 400 invalid parameters.  I can't figure out what I am doing wrong. 
var deleteGraphic:Graphic=new Graphic();
deleteGraphic.attributes={OBJECTID:logBook.selectedFeatures[0].attributes.OBJECTID};
const deletes:Array=[deleteGraphic];
logBook.applyEdits(null,null,deletes, new AsyncResponder(deleteComplete, deleteFail));

HaroldBostic · Answer

This link worked for me

http://forums.arcgis.com/threads/32876-What-s-wrong-with-this-line-of-code?p=121794&viewfull=1#post121794

HaroldBostic · Answer

Hello, I'm having the same issue.  It appears the API is not posting my deleted array, as looking at the POST in firebug only shows f=json.  Trying to delete using the REST services itself gives me an error message that says 'objectIds' parameter is invalid.

I'm building my own delete array so I have not tried selecting the features then trying to delete them.

Any help would be gladly appreciated

RuiShen · Answer

Simply try 
logBook.applyEdits(null, null, logBook.selectedFeatures);