if( !curDoc.objectStyles.item( objekt ).isValid ) {    		    
  var props = {   
    name: objekt,   
    enableStroke: false,   
    enableTextFrameGeneralOptions:true, 
    enableTextWrapAndOthers:true, 
    textWrapPreferences:{textWrapMode:TextWrapModes.JUMP_OBJECT_TEXT_WRAP, textWrapOffset:[12,12,0,0]}, 
  }  
  var oStyle = curDoc.objectStyles.add( props );            
} 

var oStyle = curDoc.objectStyles.add( props );   
oStyle.textWrapPreferences.textWrapOffset = [12,12,0,0];