Nrpn to cc

Hi,
Newb here, trying to map nrpn to cc. Does anyone have a script?

We are trying to use the unused synth controllers on a hammond skx, which output NRPN, to manipulate an RC600 looper, which only receives normal CC.

So, the hammond sends as follows where 99 refers to the bank of synth controls, 98 the individual slider control within that bank and 6 its value of 98.
[CC] ch=1 controller=99 value=81 (never changes)
[CC] ch=1 controller=98 value=17 (can be 17-25 depending on slider)
[CC] ch=1 controller=6 value=127 (will be 0-127, doesn't seem like the extra values are used)

Is there a way simply to ignore 99, grab the value of 98 to determine the CC number and 6 the value so that from the above we generate
[CC] ch=1 controller=17 value=127

Thanks,
Lee