RNAV and CDA

Hi,

Since I'm using VoxAtc I'm always assigned with the same type of arrivals or departures while there is different types (Rnav, Cda, Conventional). In my case, departing LEBL Atc always give me a conventional SID which is longer than the RNAV counterpart. And arriving LEBL, LEPA or LEIB always give me a CDA STAR (Continuos Descent Approach) which in real live is rarely used and limited to some days and periods.

So my questiom is... Is there any way to change the priority giving STAR or SID's? So the Atc will give me a RNAV STAR or SID when availble instead convential?

Thanks!