I don't own the Tyros, but if that's an option (which if it is... may I say a damn cool option) you'd need to look into your manual regarding "aftertouch" parameter settings. There are quite a few Tyros owners here who could help you there. The Tyros is on my list for consideration for my new set up.

Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.