scala - Two dimensional arrays of type actors -

i new scala , trying implement system of multiple actors of same type. using akka actors same. want keep these actors in 2 dimensional array not able initialize 2d array. below actor initialization.

var fighter1 : actorref = system.actorof(props[fighter],name = "fighter1")  //2d array of type actor(fighter) var locationmatrix= array.ofdim[fighter](3,3)  //initialization locationmatrix(0)(1)=fighter1  //this throws error  

fighter1 of type actorref , locationmatrix holds fighter objects therefore cannot put fighter1 inside it.

try this:

var locationmatrix = array.ofdim[actorref](3,3)