(GPU) access to array with non-constant indexes

When I try to access to an array with non costant indexes I have this error message: "Profile requires arrays with non-constant indexes to be uniform".

Code (csharp):

1.  
2.            CGPROGRAM
3.         #pragma vertex vert
4.         #pragma fragment frag
5.         #pragma fragmentoption ARB_precision_hint_fastest
6.         #include "UnityCG.cginc"
7.        
8.         #define BSIZE 32
9.         #define FULLSIZE 66
10.         #define NOISEFRAC 0.03125
11. //doesn't work
12.                 //return pg[5];  if I write a constant index it works
13.         }
14.  
15.               ...etc
16.  
17.  

Is there any solution?
I can't store values in a texture because I need to access them in a vertex shader. I need it for perlin noise and I want that it works in Opengl ES 2.0 (no shader model 3.0 solution)


I've also try

const float4 pg[FULLSIZE] = {
float4(-0.569811,0.432591,-0.698699,0),
..
..
}


float4 getPG(int num,const uniform float4 pgT[FULLSIZE])
{
return pgT[num];
}


when i call getPG(value,pg) works(no compile error) but return 0 as the array is empty

 

Nevermind, misread.