Global Variable 3D Feature in Part is disconnecting, why?

Hello,

I have tried several variations on this issue, but they all do the exact same thing.

I have defined a set of global variables, and have no issues connecting and changing the variable values to sketches.

However, the global feature disconnects after entering its value when I try to introduce a global variable to govern a feature such as pattern (linear or circular).

That is to say, changing the global variable will not change the associated feature of the part.

Can features/patterns be controlled via global variables?

As well, I can not find how to govern a feature's value (such as extrusion height) using an equation controlled parameter.

I hope this is possible.

Look forward to any insights.

-Samuel

SolidworksParts And Features