rfrk 2.5 rfrk_displacement Maya

[principle]

Hi,

I was wondering if anyone could enlighten me as to how to use the rfrk_displacement node in Maya? I've tried linking it to the displacement_mat in the shading group of the material i'm using but all I get is 'mia_material_x_passes2SG1: invalid displacement node connection to rfrk_displacement'

I trying to get the displacement to work with a grid mesh that's been imported into Maya with the import a bin mesh function of the RF plugin.

Should i just link the displacement image directly into the displacement_mat of the shading group?

Really any tips on using the displacement maps generated in RF with a grid mesh in Maya would be greatly appreciated.

Thanks