Countdown timer

Hi all, I’m trying to control “micsTimer” (a VUO app) using a layer time slider outputting OSC float data from vdmx.
not having much luck.
I can control the app to do certain things from companion / stereamdeck… but nothing from vdmx.
has anyone used this before?

more info…
VDMX sees the app in preferences/osc/output.