Z-Way doorlock CommandClass - openHAB item not notified

I’m having an issue with the state update commands sent to my openhab switch item.

[2017-04-28 13:05:46.113] [I] [core] Notification: warning (module): Observer not notified - openHAB item: zway_zwayDevice_192_168_2_144_6_doorlock_ZWayVDev_zway_6_0_98 (HTTP Status: 400 - Bad Request - State could not be parsed: close). Failed request: with body: close
[2017-04-28 13:05:46.134] [I] [core] openHAB item not notified FrontDoor_Lock

My item definition is:

// front door
Switch FrontDoor_Lock (Doors) {channel=“zway:zwayDevice:192_168_2_144:6:doorlock-ZWayVDev_zway_6-0-98”}

It seems that the SWITCH item will only accept ON or OFF as a state, not open or close. I tested this via the rest API and was able to reproduce the error. This issue prevents updates to my openhab item via Z-Way and eventually cause my openhab item state to change to UNDEF. I’m new to posting to git so feel free to request info. Thanks.