How-to fix - jEditable being calledback 2x?
===

I am going crazy with jEditable... it appears that the callback is being called twice in my case, where I have an fnUpdate inside my table: 

    oTable.$("td.my_class").editable(function(value, settings) 
                        { 
                            if (ifItsNumeber(value)){
                                console.log("It's a number.");
                        
                                var aPos = oTable.fnGetPosition( this );
                                console.log("aPos: "+aPos);
                                
                                
                             oTable.fnUpdate(qnttSL, aPos[0], aPos[1]));
                                
                                return(value);
                            }else{
                                console.log("It's not a NUMBER");
                        
                                return(null);    
                            }
    
                        }, 
                        {
                            width     : '100%',
                            onblur    : 'submit'
                        }
                        );

What am I doing wrong?
