RequiredIf Validator Doesn't Seem To Work With Nested Properties

Howdy! I'm just wondering if anyone has run across this issue and if so, is there a workaround? It appears that the requiredif validator does not work correctly when using nested properties. Here's my XML:

RequiredIf Validator Doesn't Seem To Work With Nested Properties

Howdy! I'm just wondering if anyone has run across this issue and if so, is there a workaround? It appears that the requiredif validator does not work correctly when using nested properties. Here's my XML: