-EditBlockAttribute

I am having difficulty getting EditBlockAttribute to work. When I manually type in the command, I am able to go through the yes or no prompts without issue. I type in the block name, attribute name and value, but when I complete the command it doesn't edit the value requested. I have tried several different options and even go so far as to copy the block name and attribute name from an export out of draftsight. I am using the free version, so not sure if that makes a difference. Anyone have an example -EditBlockAttribute script that works?