Running script from command line

Hi Team,

I need to run Garling test scenarios from command line?
Could anyone tell me which command is suited for that?

I have already tried with below command
mvn gatling:execute - Dgatling.simulationClass=UI.dcimain.scala

Where UI is my package name and dcimain is class name.

But after executing above command it's giving an error like below

Failed to execute goal io.gatling:gatling-maven-plugin:2.1 7:execute on project gatling test: Gatling failed