How to specify SBT main class on run -

i want able specify main class use when running sbt project command line without having select list on example:

[warn] multiple main classes detected.  run 'show discoveredmainclasses' see list  multiple main classes detected, select 1 run:  [1] sample.stream.basictransformation [2] sample.stream.grouplogfile [3] sample.stream.tcpecho [4] sample.stream.writeprimes  enter number: 

to run specific class command is:

sbt "runmain my.class.name param1 param2"