Control Rules using TIMEOPEN and TIMECLOSED

[BethBolt]

I have a tide gate that opens when the tide reaches a certain elevation and closes after two hours. I can open it based on the node depth, but there is no response when I try and close it using TIMEOPEN < 2.0.

What is the proper syntax to use to relate the conduit status (open or closed) to TIMEOPEN if the original control was based on node depth?

RULE GATELOGIC
IF NODE O2 DEPTH > 15
AND CONDUIT 015 TIMEOPEN < 2.0
THEN CONDUIT 015 STATUS = OPEN
ELSE CONDUIT 015 STATUS = CLOSED