Cycles Hair doesn't rendered when applied to an array

Hello friends,

I’m making this brush, using hair particles system in cycles 2.66.

My setup is simple but it doesn’t render properly.

I have a simple clump of hair, made from a plane and hair particles system (no problems, clump shows up).

I “convert” it to a mesh.

Then I tried to use the array modifier to duplicate it on the y axis …

I can see the array in solid mode, but, when I go to render mode, only the original shows up (no array).

I tried to “apply” the array modifier, still no show for the duplicates in render mode.

Any ideas? Thanks …