VST expressions and Philharmonik

I have been using Philharmonik with Cubase 5.5 for 3 years. Currently on 5.5.2.

Until now I have been using 1 articulation per sound slot and used the channel number for the output mapping.

I get strange behavior if I move an articulation from group 1 to group 2 - for example Staccato is an attribute and the output channel is 10 when on group 1. If I change the group to group 2 on the same sound slot the output is on channel 9, which is different direction articulation.

Please let me know if it possible to use an alternative to channel numbers with Philharmonic for changing articulations and if it is possible to use more than 1 group.

Thank you