Passing server path to PDF Viewer losing "\"

I have created a popup with the PDF viewer component on it and am passing in the filepath as a string custom property on the screen. However, when I pass in a network file path such as

\192.178.89.199\Ignition Shared Files

it appears in the screen missing the first “”

\192.178.89.199\Ignition Shared Files

How do I prevent losing my first slash? I’ve tried adding an extra slash and quotes, neither helped.

four slashes are the solution. \ is the escape character