Page Component Properties

Why is it that in a flow, sometimes you can get a component property, sometimes you can’t.

Example. I can set a drop down selected value in a URL check flow, but I cannot check the value in an IF or assign the value to a variable?

Thanks

Can you explain a bit further, with screenshots if possible, on what works and what doesn’t even when you feel it should?

I cannot find where to SET color of font when a condition is met. 2 examples…