See attached screenshot: no leading "/" in the assigned path, no leading ":" in the title bar path, and no script run.

You said that using the colon separator would only work for things in your Poser Runtime - in which case this result is just what we would expect.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)