How to define a persistent array in an Embedded function

I want to define some persistent arrays in an embedded function,and change their walues in cycles,but I don't know how to define this. I had trid this:

persistent X;
if isempty(X)
X=0;
end

but obviously,it's wrong. Please help me,thanks

[Kaustubha Govind]

How about:

persistent X;
if isempty(X)
X=zeros(1,5);
end

[honglin]

Thanks,it's userful for me.

[Kaustubha Govind]

Glad it helped! I added an answer with that code - could you please accept it if is resolves the question?

Answer 1

[Kaustubha Govind]

How about:

persistent X;
if isempty(X)
X=zeros(1,5);
end