AverageTimer32 custom counter not visible in perfmon x64???

Hi,

I create a counter in my app, an AverageTimer32 counter type.

but the counter is only visible when I start the x32 version of the perfmon tool!!!!

how to create a timer counter  working in the x64 version of the perfmon?

like the disk sec / read counter which is also an AverageTimer32.

thanks.