@Anonymous,
By using AutoCAD without implementing any code, you have mainly one or two options to "link" your bock to Excel. This would require using the DATALINK function in AutoCAD. That function will however only communicate with attributes and tables you create.
If I assume correctly, you are probably wondering if excel can link to a block and update a property such as a parameter, and that is not possible without coding something specific to your drawing. If that is what you want, it can be accomplished via coding but to get help from others they would need to know all of the factors surrounding your requirements. Or you can try to expand your knowledge by trying to accomplish it yourself and ultimately probably many more tasks in the process.
Best,
~DD
