Arrays as arguments to SynthDef?

Questions
10

Or would NamedControl help for arrays ?

In my case I’m stuck with the original argument size.

(
~qp1=[0,1,2,3];
~qp2=[0,1,2,3,4,5];

SynthDef(\testArray,{
	arg points=#[111,222,333,444,555,666,777];
	points=points.multichannelExpandRef(1);
	points.size.poll; // always 7
	points[2].poll; 
	points[5].poll; // returns the default value if not provided in the arg
}).add;
)

z=Synth(\testArray,args: [\points,~qp1.asRef]);