var myConst = 42;
var myInMatrix = new JitterMatrix(1, "float32", 3 ,3);
var myOutMatrix = new JitterMatrix(1, "float32", 3 ,3);
var myExpr = new JitterObject("jit.expr");
myExpr.expr = "cell*in";
myExpr.matrixcalc([myInMatrix, myConst], myOutMatrix);
The error reads "Matrix array argument not valid matrix or matrixname". I believe the error is because matrixcalc expects matrix inputs. However it is possible to pass int's and floats to jit.expr in Max. It seems like this should be possible.