Dynamic create object failed use C++

I want to create object use C++.

80570-qq图片20160301184524.png

I call a function CreateAttributeDefineByName(“AMaxLifeDefine”).
but failed.
AMaxLifeDefine inheritance AttrDefinitionBase.
AttrDefinitionBase inheritance UObject.

Log:
LogUObjectGlobals:Warning: Failed to find object 'AttrDefinitionBase /Script/gameAttributes/GameAttributeStrategyDefinition/AMaxLifeDefine.

I can create Object from path.
Thank you.