Get Data not available on Properties

So I've added a properties step.

I then added a few fields.

I would like to obtain the value on one of those fields from a JDBC Retrieve step. HJowever, it would appear that this is not possible?

Everwhere in the app, when you right click, you can get a value from a groovy script, or output from any other other step. Why not on properties?Is Property transfer the only way to do this?

Kind Regards

Ben