Yaskawa V1000 F7-xx User Parameters via EtherNet/IP Instance 166

Has anyone successfully setup an F7-xx user settable parameter in the V1000 (or A1000) VFDs? I am communicating to an RA CompactLogix PAC via EtherNet/IP using Assembly Instance 166 for the input (status) data. All of the default data is updating correctly. I would like to custom assign one of the F7-xx parameters (F7-41 for example) as "Heat sink Temperature" (as an example). According to the manual the heat sink parameter is 0068hex. When I enter this hex value into the F7 parameter and update the VFD parameters in Drive Wizard nothing shows up in the PAC tag database. How do I correctly assign user parameters (hopefully without using explicit messaging)?

Thanks in advance.