Not necessarily. In fact, in most countries, it won’t.
If you want to create a valid will or testament, you should investigate the laws of your country and hire a certified entity, such as a lawyer, to help you with that.
Our service deals with the information you want to share, not with what will happen to your assets from a legal standpoint.
On the other hand, you can use 3NCRYPT3D to inform the relevant persons of the existence of a will in the event of your death.