reference to map xplane variables to prepar3d variables

Hello,

I need to get the corresponding P3d variables for these variables in Xplane
http://www.xsquawkbox.net/xpsdk/docs/DataRefs.html

Is there any reference which would be useful or could anyone help me map a few variables

For instance, what prepar3d variables should we use to denote Position of pilot's head relative to CG, (acf_peX,acf_peY,acf_peZ in Xplane)?

Thank you