reset valve setting when valve status changes to be a fixed status (OPEN/CLOSED) by controls

[WaterDesk]

Issue Summary

In EPANET's control system, there's a bug when sequencing valve controls in the following pattern:

1. Set valve to a specific numeric setting
2. Set valve to OPEN/CLOSED
3. Set valve back to the original numeric setting

In this case, the third control command (returning to the original numeric setting) is not properly executed.

Detailed Description

Problem Scenario

When implementing valve controls with this sequence:

LINK VALVE_1 56 AT TIME 0:00
LINK VALVE_1 CLOSED AT TIME 1:00
LINK VALVE_1 56 AT TIME 2:00

The third control command (setting back to 56 at 2:00) fails to take effect.

Expected Behavior

All three control commands should be executed in sequence:

1. Valve should be set to setting 56 at 0:00
2. Valve should be fully closed at 1:00
3. Valve should return to setting 56 at 2:00

Actual Behavior

Only the first two controls are executed:

1. Valve is set to 56 at 0:00
2. Valve is closed at 1:00
3. The command to return to 56 at 2:00 is ignored

Solution

When change the valve status to a fixed status (OPEN/CLOSED), the setting value should be reset to be 0.0.