ahs wrote:but it works only in the lock window (for me)
After you lock value/bpm, select apply and close the parameters window, selecting the random button doesn't work?
ahs wrote:can this be done with manual note (i need a send command after every change)
After you get the above working, there are several different ways to do this.
Easy: with a midi device you can use "midi learn" with the Step Seq random button.
Sending other messages suggests parameter linking to Step Seq "random" using the main Bidule Parameters window. Difficult to know what's best from your request.