Because you already have a transform on this to get the “76 mins”, your only option is to use a Rule and a proxy Item. When GoogleMaps_me_duration changed trigger a Rule that strips off the mins and updates some other Item. This new other Item becomes the one that you need to use everywhere else.
val removedMins = GoogleMaps_me_duration.state.toString.split(" ").get(0)
GoogleMaps_me_duration_proxy.postUpdate(removedMins)