Assign volume to mod wheel to make real time fade in when building a style

[Seagull29]

Hi,
as you know, cc7 (volume) is not present in Style Creator when you build a style. The only volume control present is "Expression". Is anybody able to say how assign this control (cc11) directly on modulation wheel to make real time fade in on an instrument part when I build a style ? The way I found is to use mod. wheel and transform the cc1 control in cc11, but it's long to do because of the great number of cc1 in events track !
Thanks for you help
Regards
Seagull29